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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">The abrupt onset of the modern South Asian Monsoon winds</title>
<author><name sortKey="Betzler, Christian" sort="Betzler, Christian" uniqKey="Betzler C" first="Christian" last="Betzler">Christian Betzler</name>
<affiliation><nlm:aff id="a1"><institution>Institute of Geology, CEN, University of Hamburg</institution>
, Bundesstrasse 55, Hamburg 20146,<country>Germany</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Eberli, Gregor P" sort="Eberli, Gregor P" uniqKey="Eberli G" first="Gregor P." last="Eberli">Gregor P. Eberli</name>
<affiliation><nlm:aff id="a2"><institution>Department of Marine Geosciences, Rosenstiel School of Marine & Atmospheric Science, University of Miami</institution>
, Miami FL 33149,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Kroon, Dick" sort="Kroon, Dick" uniqKey="Kroon D" first="Dick" last="Kroon">Dick Kroon</name>
<affiliation><nlm:aff id="a3"><institution>Department of Geology and Geophysics, University of Edinburgh, Grant Institute, The King’s Buildings</institution>
, West Mains Road, Edinburgh EH9 3JW,<country>United Kingdom</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Wright, James D" sort="Wright, James D" uniqKey="Wright J" first="James D." last="Wright">James D. Wright</name>
<affiliation><nlm:aff id="a4"><institution>Department of Geological Sciences, Rutgers, The State University of New Jersey</institution>
, 610 Taylor Road, Piscataway NJ 08854-8066,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Swart, Peter K" sort="Swart, Peter K" uniqKey="Swart P" first="Peter K." last="Swart">Peter K. Swart</name>
<affiliation><nlm:aff id="a2"><institution>Department of Marine Geosciences, Rosenstiel School of Marine & Atmospheric Science, University of Miami</institution>
, Miami FL 33149,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Nath, Bejugam Nagender" sort="Nath, Bejugam Nagender" uniqKey="Nath B" first="Bejugam Nagender" last="Nath">Bejugam Nagender Nath</name>
<affiliation><nlm:aff id="a5"><institution>Geological Oceanography Division, CSIR-National Institute of Oceanography</institution>
, Dona Paula Goa 403004,<country>India</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Alvarez Zarikian, Carlos A" sort="Alvarez Zarikian, Carlos A" uniqKey="Alvarez Zarikian C" first="Carlos A." last="Alvarez-Zarikian">Carlos A. Alvarez-Zarikian</name>
<affiliation><nlm:aff id="a6"><institution>International Ocean Discovery Program, Texas A&M University</institution>
, Discovery Drive, College Station TX 77845,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Alonso Garcia, Montserrat" sort="Alonso Garcia, Montserrat" uniqKey="Alonso Garcia M" first="Montserrat" last="Alonso-García">Montserrat Alonso-García</name>
<affiliation><nlm:aff id="a7"><institution>Instituto Portugues do Mar e da Atmosfera (IPMA), Divisão de Geologia e Georecursos Marinhos</institution>
, Avenida de Brasilia 6, 1449-006 Lisboa,<country>Portugal</country>
</nlm:aff>
</affiliation>
<affiliation><nlm:aff id="a8"><institution>Centro de Ciencias do Mar (CCMAR), Universidade do Algarve</institution>
, Faro,<country>Portugal</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Bialik, Or M" sort="Bialik, Or M" uniqKey="Bialik O" first="Or M." last="Bialik">Or M. Bialik</name>
<affiliation><nlm:aff id="a9"><institution>Dr. Moses Strauss Department of Marine Geosciences, The Leon H. Charney School of Marine Sciences, University of Haifa</institution>
, Carmel 31905,<country>Israel</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Bl Ttler, Clara L" sort="Bl Ttler, Clara L" uniqKey="Bl Ttler C" first="Clara L." last="Bl Ttler">Clara L. Bl Ttler</name>
<affiliation><nlm:aff id="a10"><institution>Department of Geosciences, Princeton University</institution>
, Guyot Hall, Princeton NJ 08544,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Guo, Junhua Adam" sort="Guo, Junhua Adam" uniqKey="Guo J" first="Junhua Adam" last="Guo">Junhua Adam Guo</name>
<affiliation><nlm:aff id="a11"><institution>Department of Geological Sciences, California State University Bakersfield</institution>
, 9001 Stockdale Highway, Bakersfield, CA 93311,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Haffen, Sebastien" sort="Haffen, Sebastien" uniqKey="Haffen S" first="Sébastien" last="Haffen">Sébastien Haffen</name>
<affiliation><nlm:aff id="a12"><institution>Physical Properties Specialist, Ecole Nationale Superieure de Geologie, Universite de Lorraine, 2 rue du Doyen Marcel Roubault</institution>
, Vandoeuvre-les-Nancy 54501,<country>France</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Horozal, Senay" sort="Horozal, Senay" uniqKey="Horozal S" first="Senay" last="Horozal">Senay Horozal</name>
<affiliation><nlm:aff id="a13"><institution>Petroleum and Marine Research Division, Korea Institute of Geoscience & Mineral Resources (KIGAM)</institution>
, Gwahang-no 124, Yuseong-gu, Daejeon 305-350,<country>Korea</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Inoue, Mayuri" sort="Inoue, Mayuri" uniqKey="Inoue M" first="Mayuri" last="Inoue">Mayuri Inoue</name>
<affiliation><nlm:aff id="a14"><institution>Graduate School of Natural Science and Technology, Okayama University</institution>
, 3-1-1 Tsushima-naka 700-8530,<country>Japan</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Jovane, Luigi" sort="Jovane, Luigi" uniqKey="Jovane L" first="Luigi" last="Jovane">Luigi Jovane</name>
<affiliation><nlm:aff id="a15"><institution>Instituto Oceanográfico da Universidade de São Paulo, Praça do Oceanográfico, 191, São Paulo</institution>
, SP 05508-120,<country>Brazil</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Lanci, Luca" sort="Lanci, Luca" uniqKey="Lanci L" first="Luca" last="Lanci">Luca Lanci</name>
<affiliation><nlm:aff id="a16"><institution>Istituto di Scienze della Terra, Università di Urbino</institution>
, Via S. Chiara 27, Urbino 61029,<country>Italy</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Laya, Juan Carlos" sort="Laya, Juan Carlos" uniqKey="Laya J" first="Juan Carlos" last="Laya">Juan Carlos Laya</name>
<affiliation><nlm:aff id="a17"><institution>Department of Geology and Geophysics, Texas A&M University</institution>
, Mail Stop 3115, College Station TX 77843-3115,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Mee, Anna Ling Hui" sort="Mee, Anna Ling Hui" uniqKey="Mee A" first="Anna Ling Hui" last="Mee">Anna Ling Hui Mee</name>
<affiliation><nlm:aff id="a2"><institution>Department of Marine Geosciences, Rosenstiel School of Marine & Atmospheric Science, University of Miami</institution>
, Miami FL 33149,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Ludmann, Thomas" sort="Ludmann, Thomas" uniqKey="Ludmann T" first="Thomas" last="Lüdmann">Thomas Lüdmann</name>
<affiliation><nlm:aff id="a1"><institution>Institute of Geology, CEN, University of Hamburg</institution>
, Bundesstrasse 55, Hamburg 20146,<country>Germany</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Nakakuni, Masatoshi" sort="Nakakuni, Masatoshi" uniqKey="Nakakuni M" first="Masatoshi" last="Nakakuni">Masatoshi Nakakuni</name>
<affiliation><nlm:aff id="a18"><institution>Department of Environmental Engineering for Symbiosis, Soka University</institution>
, 1-236 Tangi-cyo, Hachioji-shi Tokyo 192-0003,<country>Japan</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Niino, Kaoru" sort="Niino, Kaoru" uniqKey="Niino K" first="Kaoru" last="Niino">Kaoru Niino</name>
<affiliation><nlm:aff id="a19"><institution>Graduate School of Science and Engineering, Yamagata University</institution>
, 1-4-12 Kojirakawa-machi, Yamagata City 990-8560,<country>Japan</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Petruny, Loren M" sort="Petruny, Loren M" uniqKey="Petruny L" first="Loren M." last="Petruny">Loren M. Petruny</name>
<affiliation><nlm:aff id="a20"><institution>Environmental Science and Policy Department, David King Hall Rm 3005, MSN 5F2, George Mason University, University Drive</institution>
, Fairfax, VA 22030-4444,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Pratiwi, Santi D" sort="Pratiwi, Santi D" uniqKey="Pratiwi S" first="Santi D." last="Pratiwi">Santi D. Pratiwi</name>
<affiliation><nlm:aff id="a21"><institution>Department of Geosciences, Geotechnology and Materials Engineering for Resources, Akita University</institution>
, 1-1 Teagata-Gakuencho, Akita 010-8502<country>Japan</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Reijmer, John J G" sort="Reijmer, John J G" uniqKey="Reijmer J" first="John J. G." last="Reijmer">John J. G. Reijmer</name>
<affiliation><nlm:aff id="a22"><institution>Department of Earth and Life Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, HV</institution>
Amsterdam,<country>The Netherlands</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Reolid, Jesus" sort="Reolid, Jesus" uniqKey="Reolid J" first="Jesús" last="Reolid">Jesús Reolid</name>
<affiliation><nlm:aff id="a1"><institution>Institute of Geology, CEN, University of Hamburg</institution>
, Bundesstrasse 55, Hamburg 20146,<country>Germany</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Slagle, Angela L" sort="Slagle, Angela L" uniqKey="Slagle A" first="Angela L." last="Slagle">Angela L. Slagle</name>
<affiliation><nlm:aff id="a23"><institution>Lamont-Doherty Earth Observatory, Columbia University, Borehole Bldg. 61 Route 9W</institution>
, Palisades NY 10964,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Sloss, Craig R" sort="Sloss, Craig R" uniqKey="Sloss C" first="Craig R." last="Sloss">Craig R. Sloss</name>
<affiliation><nlm:aff id="a24"><institution>Earth and Environmental Sciences, University of Technology Queensland</institution>
, R-Block 317, 2 George Street, Brisbane Queensland 4001,<country>Australia</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Su, Xiang" sort="Su, Xiang" uniqKey="Su X" first="Xiang" last="Su">Xiang Su</name>
<affiliation><nlm:aff id="a25"><institution>Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences</institution>
, West Xingang Road, Guangzhou 510301,<country>P.R. China</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Yao, Zhengquan" sort="Yao, Zhengquan" uniqKey="Yao Z" first="Zhengquan" last="Yao">Zhengquan Yao</name>
<affiliation><nlm:aff id="a26"><institution>Department of Marine Geology, First Institute of Oceanography (FIO) State Oceanic Administration (SOA)</institution>
, #6 Xian Xia Ling Road, Qingdao Shandong Province 266061,<country>P.R. China</country>
</nlm:aff>
</affiliation>
<affiliation><nlm:aff id="a27"><institution>Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology</institution>
, Qingdao,<country>P.R. China</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Young, Jeremy R" sort="Young, Jeremy R" uniqKey="Young J" first="Jeremy R." last="Young">Jeremy R. Young</name>
<affiliation><nlm:aff id="a28"><institution>Department of Earth Sciences, University College London</institution>
, Gower Street, London WC1E 6BT,<country>United Kingdom</country>
</nlm:aff>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">PMC</idno>
<idno type="pmid">27436574</idno>
<idno type="pmc">4951686</idno>
<idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4951686</idno>
<idno type="RBID">PMC:4951686</idno>
<idno type="doi">10.1038/srep29838</idno>
<date when="2016">2016</date>
<idno type="wicri:Area/Pmc/Corpus">000833</idno>
<idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000833</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">The abrupt onset of the modern South Asian Monsoon winds</title>
<author><name sortKey="Betzler, Christian" sort="Betzler, Christian" uniqKey="Betzler C" first="Christian" last="Betzler">Christian Betzler</name>
<affiliation><nlm:aff id="a1"><institution>Institute of Geology, CEN, University of Hamburg</institution>
, Bundesstrasse 55, Hamburg 20146,<country>Germany</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Eberli, Gregor P" sort="Eberli, Gregor P" uniqKey="Eberli G" first="Gregor P." last="Eberli">Gregor P. Eberli</name>
<affiliation><nlm:aff id="a2"><institution>Department of Marine Geosciences, Rosenstiel School of Marine & Atmospheric Science, University of Miami</institution>
, Miami FL 33149,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Kroon, Dick" sort="Kroon, Dick" uniqKey="Kroon D" first="Dick" last="Kroon">Dick Kroon</name>
<affiliation><nlm:aff id="a3"><institution>Department of Geology and Geophysics, University of Edinburgh, Grant Institute, The King’s Buildings</institution>
, West Mains Road, Edinburgh EH9 3JW,<country>United Kingdom</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Wright, James D" sort="Wright, James D" uniqKey="Wright J" first="James D." last="Wright">James D. Wright</name>
<affiliation><nlm:aff id="a4"><institution>Department of Geological Sciences, Rutgers, The State University of New Jersey</institution>
, 610 Taylor Road, Piscataway NJ 08854-8066,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Swart, Peter K" sort="Swart, Peter K" uniqKey="Swart P" first="Peter K." last="Swart">Peter K. Swart</name>
<affiliation><nlm:aff id="a2"><institution>Department of Marine Geosciences, Rosenstiel School of Marine & Atmospheric Science, University of Miami</institution>
, Miami FL 33149,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Nath, Bejugam Nagender" sort="Nath, Bejugam Nagender" uniqKey="Nath B" first="Bejugam Nagender" last="Nath">Bejugam Nagender Nath</name>
<affiliation><nlm:aff id="a5"><institution>Geological Oceanography Division, CSIR-National Institute of Oceanography</institution>
, Dona Paula Goa 403004,<country>India</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Alvarez Zarikian, Carlos A" sort="Alvarez Zarikian, Carlos A" uniqKey="Alvarez Zarikian C" first="Carlos A." last="Alvarez-Zarikian">Carlos A. Alvarez-Zarikian</name>
<affiliation><nlm:aff id="a6"><institution>International Ocean Discovery Program, Texas A&M University</institution>
, Discovery Drive, College Station TX 77845,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Alonso Garcia, Montserrat" sort="Alonso Garcia, Montserrat" uniqKey="Alonso Garcia M" first="Montserrat" last="Alonso-García">Montserrat Alonso-García</name>
<affiliation><nlm:aff id="a7"><institution>Instituto Portugues do Mar e da Atmosfera (IPMA), Divisão de Geologia e Georecursos Marinhos</institution>
, Avenida de Brasilia 6, 1449-006 Lisboa,<country>Portugal</country>
</nlm:aff>
</affiliation>
<affiliation><nlm:aff id="a8"><institution>Centro de Ciencias do Mar (CCMAR), Universidade do Algarve</institution>
, Faro,<country>Portugal</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Bialik, Or M" sort="Bialik, Or M" uniqKey="Bialik O" first="Or M." last="Bialik">Or M. Bialik</name>
<affiliation><nlm:aff id="a9"><institution>Dr. Moses Strauss Department of Marine Geosciences, The Leon H. Charney School of Marine Sciences, University of Haifa</institution>
, Carmel 31905,<country>Israel</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Bl Ttler, Clara L" sort="Bl Ttler, Clara L" uniqKey="Bl Ttler C" first="Clara L." last="Bl Ttler">Clara L. Bl Ttler</name>
<affiliation><nlm:aff id="a10"><institution>Department of Geosciences, Princeton University</institution>
, Guyot Hall, Princeton NJ 08544,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Guo, Junhua Adam" sort="Guo, Junhua Adam" uniqKey="Guo J" first="Junhua Adam" last="Guo">Junhua Adam Guo</name>
<affiliation><nlm:aff id="a11"><institution>Department of Geological Sciences, California State University Bakersfield</institution>
, 9001 Stockdale Highway, Bakersfield, CA 93311,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Haffen, Sebastien" sort="Haffen, Sebastien" uniqKey="Haffen S" first="Sébastien" last="Haffen">Sébastien Haffen</name>
<affiliation><nlm:aff id="a12"><institution>Physical Properties Specialist, Ecole Nationale Superieure de Geologie, Universite de Lorraine, 2 rue du Doyen Marcel Roubault</institution>
, Vandoeuvre-les-Nancy 54501,<country>France</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Horozal, Senay" sort="Horozal, Senay" uniqKey="Horozal S" first="Senay" last="Horozal">Senay Horozal</name>
<affiliation><nlm:aff id="a13"><institution>Petroleum and Marine Research Division, Korea Institute of Geoscience & Mineral Resources (KIGAM)</institution>
, Gwahang-no 124, Yuseong-gu, Daejeon 305-350,<country>Korea</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Inoue, Mayuri" sort="Inoue, Mayuri" uniqKey="Inoue M" first="Mayuri" last="Inoue">Mayuri Inoue</name>
<affiliation><nlm:aff id="a14"><institution>Graduate School of Natural Science and Technology, Okayama University</institution>
, 3-1-1 Tsushima-naka 700-8530,<country>Japan</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Jovane, Luigi" sort="Jovane, Luigi" uniqKey="Jovane L" first="Luigi" last="Jovane">Luigi Jovane</name>
<affiliation><nlm:aff id="a15"><institution>Instituto Oceanográfico da Universidade de São Paulo, Praça do Oceanográfico, 191, São Paulo</institution>
, SP 05508-120,<country>Brazil</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Lanci, Luca" sort="Lanci, Luca" uniqKey="Lanci L" first="Luca" last="Lanci">Luca Lanci</name>
<affiliation><nlm:aff id="a16"><institution>Istituto di Scienze della Terra, Università di Urbino</institution>
, Via S. Chiara 27, Urbino 61029,<country>Italy</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Laya, Juan Carlos" sort="Laya, Juan Carlos" uniqKey="Laya J" first="Juan Carlos" last="Laya">Juan Carlos Laya</name>
<affiliation><nlm:aff id="a17"><institution>Department of Geology and Geophysics, Texas A&M University</institution>
, Mail Stop 3115, College Station TX 77843-3115,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Mee, Anna Ling Hui" sort="Mee, Anna Ling Hui" uniqKey="Mee A" first="Anna Ling Hui" last="Mee">Anna Ling Hui Mee</name>
<affiliation><nlm:aff id="a2"><institution>Department of Marine Geosciences, Rosenstiel School of Marine & Atmospheric Science, University of Miami</institution>
, Miami FL 33149,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Ludmann, Thomas" sort="Ludmann, Thomas" uniqKey="Ludmann T" first="Thomas" last="Lüdmann">Thomas Lüdmann</name>
<affiliation><nlm:aff id="a1"><institution>Institute of Geology, CEN, University of Hamburg</institution>
, Bundesstrasse 55, Hamburg 20146,<country>Germany</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Nakakuni, Masatoshi" sort="Nakakuni, Masatoshi" uniqKey="Nakakuni M" first="Masatoshi" last="Nakakuni">Masatoshi Nakakuni</name>
<affiliation><nlm:aff id="a18"><institution>Department of Environmental Engineering for Symbiosis, Soka University</institution>
, 1-236 Tangi-cyo, Hachioji-shi Tokyo 192-0003,<country>Japan</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Niino, Kaoru" sort="Niino, Kaoru" uniqKey="Niino K" first="Kaoru" last="Niino">Kaoru Niino</name>
<affiliation><nlm:aff id="a19"><institution>Graduate School of Science and Engineering, Yamagata University</institution>
, 1-4-12 Kojirakawa-machi, Yamagata City 990-8560,<country>Japan</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Petruny, Loren M" sort="Petruny, Loren M" uniqKey="Petruny L" first="Loren M." last="Petruny">Loren M. Petruny</name>
<affiliation><nlm:aff id="a20"><institution>Environmental Science and Policy Department, David King Hall Rm 3005, MSN 5F2, George Mason University, University Drive</institution>
, Fairfax, VA 22030-4444,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Pratiwi, Santi D" sort="Pratiwi, Santi D" uniqKey="Pratiwi S" first="Santi D." last="Pratiwi">Santi D. Pratiwi</name>
<affiliation><nlm:aff id="a21"><institution>Department of Geosciences, Geotechnology and Materials Engineering for Resources, Akita University</institution>
, 1-1 Teagata-Gakuencho, Akita 010-8502<country>Japan</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Reijmer, John J G" sort="Reijmer, John J G" uniqKey="Reijmer J" first="John J. G." last="Reijmer">John J. G. Reijmer</name>
<affiliation><nlm:aff id="a22"><institution>Department of Earth and Life Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, HV</institution>
Amsterdam,<country>The Netherlands</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Reolid, Jesus" sort="Reolid, Jesus" uniqKey="Reolid J" first="Jesús" last="Reolid">Jesús Reolid</name>
<affiliation><nlm:aff id="a1"><institution>Institute of Geology, CEN, University of Hamburg</institution>
, Bundesstrasse 55, Hamburg 20146,<country>Germany</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Slagle, Angela L" sort="Slagle, Angela L" uniqKey="Slagle A" first="Angela L." last="Slagle">Angela L. Slagle</name>
<affiliation><nlm:aff id="a23"><institution>Lamont-Doherty Earth Observatory, Columbia University, Borehole Bldg. 61 Route 9W</institution>
, Palisades NY 10964,<country>USA</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Sloss, Craig R" sort="Sloss, Craig R" uniqKey="Sloss C" first="Craig R." last="Sloss">Craig R. Sloss</name>
<affiliation><nlm:aff id="a24"><institution>Earth and Environmental Sciences, University of Technology Queensland</institution>
, R-Block 317, 2 George Street, Brisbane Queensland 4001,<country>Australia</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Su, Xiang" sort="Su, Xiang" uniqKey="Su X" first="Xiang" last="Su">Xiang Su</name>
<affiliation><nlm:aff id="a25"><institution>Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences</institution>
, West Xingang Road, Guangzhou 510301,<country>P.R. China</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Yao, Zhengquan" sort="Yao, Zhengquan" uniqKey="Yao Z" first="Zhengquan" last="Yao">Zhengquan Yao</name>
<affiliation><nlm:aff id="a26"><institution>Department of Marine Geology, First Institute of Oceanography (FIO) State Oceanic Administration (SOA)</institution>
, #6 Xian Xia Ling Road, Qingdao Shandong Province 266061,<country>P.R. China</country>
</nlm:aff>
</affiliation>
<affiliation><nlm:aff id="a27"><institution>Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology</institution>
, Qingdao,<country>P.R. China</country>
</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Young, Jeremy R" sort="Young, Jeremy R" uniqKey="Young J" first="Jeremy R." last="Young">Jeremy R. Young</name>
<affiliation><nlm:aff id="a28"><institution>Department of Earth Sciences, University College London</institution>
, Gower Street, London WC1E 6BT,<country>United Kingdom</country>
</nlm:aff>
</affiliation>
</author>
</analytic>
<series><title level="j">Scientific Reports</title>
<idno type="eISSN">2045-2322</idno>
<imprint><date when="2016">2016</date>
</imprint>
</series>
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<front><div type="abstract" xml:lang="en"><p>The South Asian Monson (SAM) is one of the most intense climatic elements yet its initiation and variations are not well established. Dating the deposits of SAM wind-driven currents in IODP cores from the Maldives yields an age of 12. 9 Ma indicating an abrupt SAM onset, over a short period of 300 kyrs. This coincided with the Indian Ocean Oxygen Minimum Zone expansion as revealed by geochemical tracers and the onset of upwelling reflected by the sediment’s content of particulate organic matter. A weaker ‘proto-monsoon’ existed between 12.9 and 25 Ma, as mirrored by the sedimentary signature of dust influx. Abrupt SAM initiation favors a strong influence of climate in addition to the tectonic control, and we propose that the post Miocene Climate Optimum cooling, together with increased continentalization and establishment of the bipolar ocean circulation, i.e. the beginning of the modern world, shifted the monsoon over a threshold towards the modern system.</p>
</div>
</front>
<back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Kroon, D" uniqKey="Kroon D">D. Kroon</name>
</author>
<author><name sortKey="Steens, T" uniqKey="Steens T">T. Steens</name>
</author>
<author><name sortKey="Troelstra, S R" uniqKey="Troelstra S">S. R. Troelstra</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Clift, P D" uniqKey="Clift P">P. D. Clift</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Guo, Z T" uniqKey="Guo Z">Z. T. Guo</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Qiang, X K" uniqKey="Qiang X">X. K. Qiang</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Zheng, H" uniqKey="Zheng H">H. Zheng</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Prell, W L" uniqKey="Prell W">W. L. Prell</name>
</author>
<author><name sortKey="Kutzbach, J E" uniqKey="Kutzbach J">J. E. Kutzbach</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Gupta, A K" uniqKey="Gupta A">A. K. Gupta</name>
</author>
<author><name sortKey="Singh, R K" uniqKey="Singh R">R. K. Singh</name>
</author>
<author><name sortKey="Joseph, S" uniqKey="Joseph S">S. Joseph</name>
</author>
<author><name sortKey="Thomas, E" uniqKey="Thomas E">E. Thomas</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Betzler, C" uniqKey="Betzler C">C. Betzler</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Betzler, C" uniqKey="Betzler C">C. Betzler</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Ludmann, T" uniqKey="Ludmann T">T. Lüdmann</name>
</author>
<author><name sortKey="Kalvelage, C" uniqKey="Kalvelage C">C. Kalvelage</name>
</author>
<author><name sortKey="Betzler, C" uniqKey="Betzler C">C. Betzler</name>
</author>
<author><name sortKey="Furstenau, J" uniqKey="Furstenau J">J. Fürstenau</name>
</author>
<author><name sortKey="Hubscher, C" uniqKey="Hubscher C">C. Hübscher</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Aubert, O" uniqKey="Aubert O">O. Aubert</name>
</author>
<author><name sortKey="Droxler, A W" uniqKey="Droxler A">A. W. Droxler</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Miller, K G" uniqKey="Miller K">K. G. Miller</name>
</author>
<author><name sortKey="Wright, J D" uniqKey="Wright J">J. D. Wright</name>
</author>
<author><name sortKey="Fairbanks, R G" uniqKey="Fairbanks R">R. G. Fairbanks</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Zachos, J" uniqKey="Zachos J">J. Zachos</name>
</author>
<author><name sortKey="Pagani, M" uniqKey="Pagani M">M. Pagani</name>
</author>
<author><name sortKey="Sloan, L" uniqKey="Sloan L">L. Sloan</name>
</author>
<author><name sortKey="Thomas, E" uniqKey="Thomas E">E. Thomas</name>
</author>
<author><name sortKey="Billups, K" uniqKey="Billups K">K. Billups</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Miller, K G" uniqKey="Miller K">K. G. Miller</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Eberli, G P" uniqKey="Eberli G">G. P. Eberli</name>
</author>
<author><name sortKey="Ginsburg, R N" uniqKey="Ginsburg R">R. N. Ginsburg</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Maher, B A" uniqKey="Maher B">B. A. Maher</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Aston, S R" uniqKey="Aston S">S. R. Aston</name>
</author>
<author><name sortKey="Chester, R" uniqKey="Chester R">R. Chester</name>
</author>
<author><name sortKey="Johnson, L R" uniqKey="Johnson L">L. R. Johnson</name>
</author>
<author><name sortKey="Padgham, R C" uniqKey="Padgham R">R. C. Padgham</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Grand, M M" uniqKey="Grand M">M. M. Grand</name>
</author>
</analytic>
</biblStruct>
<biblStruct></biblStruct>
<biblStruct><analytic><author><name sortKey="Sasamal, S K" uniqKey="Sasamal S">S. K. Sasamal</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="De Vos, A" uniqKey="De Vos A">A. de Vos</name>
</author>
<author><name sortKey="Pattiaratchi, C B" uniqKey="Pattiaratchi C">C. B. Pattiaratchi</name>
</author>
<author><name sortKey="Wijeratne, E M S" uniqKey="Wijeratne E">E. M. S. Wijeratne</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Dickens, G R" uniqKey="Dickens G">G. R. Dickens</name>
</author>
<author><name sortKey="Owen, R M" uniqKey="Owen R">R. M. Owen</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Gupta, K" uniqKey="Gupta K">K. Gupta</name>
</author>
<author><name sortKey="Yuvaraja, A" uniqKey="Yuvaraja A">A. Yuvaraja</name>
</author>
<author><name sortKey="Prakasam, M" uniqKey="Prakasam M">M. Prakasam</name>
</author>
<author><name sortKey="Clemens, S C" uniqKey="Clemens S">S. C. Clemens</name>
</author>
<author><name sortKey="Velu, A" uniqKey="Velu A">A. Velu</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Ramstein, G" uniqKey="Ramstein G">G. Ramstein</name>
</author>
<author><name sortKey="Fluteau, F" uniqKey="Fluteau F">F. Fluteau</name>
</author>
<author><name sortKey="Besse, J" uniqKey="Besse J">J. Besse</name>
</author>
<author><name sortKey="Joussaume, S" uniqKey="Joussaume S">S. Joussaume</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Fluteau, F" uniqKey="Fluteau F">F. Fluteau</name>
</author>
<author><name sortKey="Ramstein, G" uniqKey="Ramstein G">G. Ramstein</name>
</author>
<author><name sortKey="Besse, J" uniqKey="Besse J">J. Besse</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Flower, B P" uniqKey="Flower B">B. P. Flower</name>
</author>
<author><name sortKey="Kennett, J P" uniqKey="Kennett J">J. P. Kennett</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Poore, H R" uniqKey="Poore H">H. R. Poore</name>
</author>
<author><name sortKey="Samworth, R" uniqKey="Samworth R">R. Samworth</name>
</author>
<author><name sortKey="White, N J" uniqKey="White N">N. J. White</name>
</author>
<author><name sortKey="Jones, S M" uniqKey="Jones S">S. M. Jones</name>
</author>
<author><name sortKey="Mccave, I N" uniqKey="Mccave I">I. N. McCave</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Wright, J D" uniqKey="Wright J">J. D. Wright</name>
</author>
<author><name sortKey="Miller, K G" uniqKey="Miller K">K. G. Miller</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Gradstein, F M" uniqKey="Gradstein F">F. M. Gradstein</name>
</author>
<author><name sortKey="Ogg, J G" uniqKey="Ogg J">J. G. Ogg</name>
</author>
<author><name sortKey="Schmitz, M D" uniqKey="Schmitz M">M. D. Schmitz</name>
</author>
<author><name sortKey="Ogg, G M" uniqKey="Ogg G">G. M. Ogg</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Holbourn, A" uniqKey="Holbourn A">A. Holbourn</name>
</author>
<author><name sortKey="Kuhnt, W" uniqKey="Kuhnt W">W. Kuhnt</name>
</author>
<author><name sortKey="Schulz, M" uniqKey="Schulz M">M. Schulz</name>
</author>
<author><name sortKey="Erlenkeuser, H" uniqKey="Erlenkeuser H">H. Erlenkeuser</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Holbourn, W" uniqKey="Holbourn W">W. Holbourn</name>
</author>
<author><name sortKey="Kuhnt, K G D" uniqKey="Kuhnt K">K. G. D. Kuhnt</name>
</author>
<author><name sortKey="Kochhann, N" uniqKey="Kochhann N">N. Kochhann</name>
</author>
<author><name sortKey="Andersen, K J S" uniqKey="Andersen K">K. J. S. Andersen</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Reuter, M" uniqKey="Reuter M">M. Reuter</name>
</author>
</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Taylforth, J E" uniqKey="Taylforth J">J. E. Taylforth</name>
</author>
</analytic>
</biblStruct>
</listBibl>
</div1>
</back>
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<pmc article-type="research-article"><pmc-dir>properties open_access</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Sci Rep</journal-id>
<journal-id journal-id-type="iso-abbrev">Sci Rep</journal-id>
<journal-title-group><journal-title>Scientific Reports</journal-title>
</journal-title-group>
<issn pub-type="epub">2045-2322</issn>
<publisher><publisher-name>Nature Publishing Group</publisher-name>
</publisher>
</journal-meta>
<article-meta><article-id pub-id-type="pmid">27436574</article-id>
<article-id pub-id-type="pmc">4951686</article-id>
<article-id pub-id-type="pii">srep29838</article-id>
<article-id pub-id-type="doi">10.1038/srep29838</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Article</subject>
</subj-group>
</article-categories>
<title-group><article-title>The abrupt onset of the modern South Asian Monsoon winds</article-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Betzler</surname>
<given-names>Christian</given-names>
</name>
<xref ref-type="corresp" rid="c1">a</xref>
<xref ref-type="aff" rid="a1">1</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Eberli</surname>
<given-names>Gregor P.</given-names>
</name>
<xref ref-type="aff" rid="a2">2</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Kroon</surname>
<given-names>Dick</given-names>
</name>
<xref ref-type="aff" rid="a3">3</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Wright</surname>
<given-names>James D.</given-names>
</name>
<xref ref-type="aff" rid="a4">4</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Swart</surname>
<given-names>Peter K.</given-names>
</name>
<xref ref-type="aff" rid="a2">2</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Nath</surname>
<given-names>Bejugam Nagender</given-names>
</name>
<xref ref-type="aff" rid="a5">5</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Alvarez-Zarikian</surname>
<given-names>Carlos A.</given-names>
</name>
<xref ref-type="aff" rid="a6">6</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Alonso-García</surname>
<given-names>Montserrat</given-names>
</name>
<xref ref-type="aff" rid="a7">7</xref>
<xref ref-type="aff" rid="a8">8</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Bialik</surname>
<given-names>Or M.</given-names>
</name>
<xref ref-type="aff" rid="a9">9</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Blättler</surname>
<given-names>Clara L.</given-names>
</name>
<xref ref-type="aff" rid="a10">10</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Guo</surname>
<given-names>Junhua Adam</given-names>
</name>
<xref ref-type="aff" rid="a11">11</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Haffen</surname>
<given-names>Sébastien</given-names>
</name>
<xref ref-type="aff" rid="a12">12</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Horozal</surname>
<given-names>Senay</given-names>
</name>
<xref ref-type="aff" rid="a13">13</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Inoue</surname>
<given-names>Mayuri</given-names>
</name>
<xref ref-type="aff" rid="a14">14</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Jovane</surname>
<given-names>Luigi</given-names>
</name>
<xref ref-type="aff" rid="a15">15</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Lanci</surname>
<given-names>Luca</given-names>
</name>
<xref ref-type="aff" rid="a16">16</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Laya</surname>
<given-names>Juan Carlos</given-names>
</name>
<xref ref-type="aff" rid="a17">17</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Mee</surname>
<given-names>Anna Ling Hui</given-names>
</name>
<xref ref-type="aff" rid="a2">2</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Lüdmann</surname>
<given-names>Thomas</given-names>
</name>
<xref ref-type="aff" rid="a1">1</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Nakakuni</surname>
<given-names>Masatoshi</given-names>
</name>
<xref ref-type="aff" rid="a18">18</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Niino</surname>
<given-names>Kaoru</given-names>
</name>
<xref ref-type="aff" rid="a19">19</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Petruny</surname>
<given-names>Loren M.</given-names>
</name>
<xref ref-type="aff" rid="a20">20</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Pratiwi</surname>
<given-names>Santi D.</given-names>
</name>
<xref ref-type="aff" rid="a21">21</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Reijmer</surname>
<given-names>John J. G.</given-names>
</name>
<xref ref-type="aff" rid="a22">22</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Reolid</surname>
<given-names>Jesús</given-names>
</name>
<xref ref-type="aff" rid="a1">1</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Slagle</surname>
<given-names>Angela L.</given-names>
</name>
<xref ref-type="aff" rid="a23">23</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Sloss</surname>
<given-names>Craig R.</given-names>
</name>
<xref ref-type="aff" rid="a24">24</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Su</surname>
<given-names>Xiang</given-names>
</name>
<xref ref-type="aff" rid="a25">25</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Yao</surname>
<given-names>Zhengquan</given-names>
</name>
<xref ref-type="aff" rid="a26">26</xref>
<xref ref-type="aff" rid="a27">27</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Young</surname>
<given-names>Jeremy R.</given-names>
</name>
<xref ref-type="aff" rid="a28">28</xref>
</contrib>
<aff id="a1"><label>1</label>
<institution>Institute of Geology, CEN, University of Hamburg</institution>
, Bundesstrasse 55, Hamburg 20146,<country>Germany</country>
</aff>
<aff id="a2"><label>2</label>
<institution>Department of Marine Geosciences, Rosenstiel School of Marine & Atmospheric Science, University of Miami</institution>
, Miami FL 33149,<country>USA</country>
</aff>
<aff id="a3"><label>3</label>
<institution>Department of Geology and Geophysics, University of Edinburgh, Grant Institute, The King’s Buildings</institution>
, West Mains Road, Edinburgh EH9 3JW,<country>United Kingdom</country>
</aff>
<aff id="a4"><label>4</label>
<institution>Department of Geological Sciences, Rutgers, The State University of New Jersey</institution>
, 610 Taylor Road, Piscataway NJ 08854-8066,<country>USA</country>
</aff>
<aff id="a5"><label>5</label>
<institution>Geological Oceanography Division, CSIR-National Institute of Oceanography</institution>
, Dona Paula Goa 403004,<country>India</country>
</aff>
<aff id="a6"><label>6</label>
<institution>International Ocean Discovery Program, Texas A&M University</institution>
, Discovery Drive, College Station TX 77845,<country>USA</country>
</aff>
<aff id="a7"><label>7</label>
<institution>Instituto Portugues do Mar e da Atmosfera (IPMA), Divisão de Geologia e Georecursos Marinhos</institution>
, Avenida de Brasilia 6, 1449-006 Lisboa,<country>Portugal</country>
</aff>
<aff id="a8"><label>8</label>
<institution>Centro de Ciencias do Mar (CCMAR), Universidade do Algarve</institution>
, Faro,<country>Portugal</country>
</aff>
<aff id="a9"><label>9</label>
<institution>Dr. Moses Strauss Department of Marine Geosciences, The Leon H. Charney School of Marine Sciences, University of Haifa</institution>
, Carmel 31905,<country>Israel</country>
</aff>
<aff id="a10"><label>10</label>
<institution>Department of Geosciences, Princeton University</institution>
, Guyot Hall, Princeton NJ 08544,<country>USA</country>
</aff>
<aff id="a11"><label>11</label>
<institution>Department of Geological Sciences, California State University Bakersfield</institution>
, 9001 Stockdale Highway, Bakersfield, CA 93311,<country>USA</country>
</aff>
<aff id="a12"><label>12</label>
<institution>Physical Properties Specialist, Ecole Nationale Superieure de Geologie, Universite de Lorraine, 2 rue du Doyen Marcel Roubault</institution>
, Vandoeuvre-les-Nancy 54501,<country>France</country>
</aff>
<aff id="a13"><label>13</label>
<institution>Petroleum and Marine Research Division, Korea Institute of Geoscience & Mineral Resources (KIGAM)</institution>
, Gwahang-no 124, Yuseong-gu, Daejeon 305-350,<country>Korea</country>
</aff>
<aff id="a14"><label>14</label>
<institution>Graduate School of Natural Science and Technology, Okayama University</institution>
, 3-1-1 Tsushima-naka 700-8530,<country>Japan</country>
</aff>
<aff id="a15"><label>15</label>
<institution>Instituto Oceanográfico da Universidade de São Paulo, Praça do Oceanográfico, 191, São Paulo</institution>
, SP 05508-120,<country>Brazil</country>
</aff>
<aff id="a16"><label>16</label>
<institution>Istituto di Scienze della Terra, Università di Urbino</institution>
, Via S. Chiara 27, Urbino 61029,<country>Italy</country>
</aff>
<aff id="a17"><label>17</label>
<institution>Department of Geology and Geophysics, Texas A&M University</institution>
, Mail Stop 3115, College Station TX 77843-3115,<country>USA</country>
</aff>
<aff id="a18"><label>18</label>
<institution>Department of Environmental Engineering for Symbiosis, Soka University</institution>
, 1-236 Tangi-cyo, Hachioji-shi Tokyo 192-0003,<country>Japan</country>
</aff>
<aff id="a19"><label>19</label>
<institution>Graduate School of Science and Engineering, Yamagata University</institution>
, 1-4-12 Kojirakawa-machi, Yamagata City 990-8560,<country>Japan</country>
</aff>
<aff id="a20"><label>20</label>
<institution>Environmental Science and Policy Department, David King Hall Rm 3005, MSN 5F2, George Mason University, University Drive</institution>
, Fairfax, VA 22030-4444,<country>USA</country>
</aff>
<aff id="a21"><label>21</label>
<institution>Department of Geosciences, Geotechnology and Materials Engineering for Resources, Akita University</institution>
, 1-1 Teagata-Gakuencho, Akita 010-8502<country>Japan</country>
</aff>
<aff id="a22"><label>22</label>
<institution>Department of Earth and Life Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, HV</institution>
Amsterdam,<country>The Netherlands</country>
</aff>
<aff id="a23"><label>23</label>
<institution>Lamont-Doherty Earth Observatory, Columbia University, Borehole Bldg. 61 Route 9W</institution>
, Palisades NY 10964,<country>USA</country>
</aff>
<aff id="a24"><label>24</label>
<institution>Earth and Environmental Sciences, University of Technology Queensland</institution>
, R-Block 317, 2 George Street, Brisbane Queensland 4001,<country>Australia</country>
</aff>
<aff id="a25"><label>25</label>
<institution>Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences</institution>
, West Xingang Road, Guangzhou 510301,<country>P.R. China</country>
</aff>
<aff id="a26"><label>26</label>
<institution>Department of Marine Geology, First Institute of Oceanography (FIO) State Oceanic Administration (SOA)</institution>
, #6 Xian Xia Ling Road, Qingdao Shandong Province 266061,<country>P.R. China</country>
</aff>
<aff id="a27"><label>27</label>
<institution>Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology</institution>
, Qingdao,<country>P.R. China</country>
</aff>
<aff id="a28"><label>28</label>
<institution>Department of Earth Sciences, University College London</institution>
, Gower Street, London WC1E 6BT,<country>United Kingdom</country>
</aff>
</contrib-group>
<author-notes><corresp id="c1"><label>a</label>
<email>christian.betzler@uni-hamburg.de</email>
</corresp>
</author-notes>
<pub-date pub-type="epub"><day>20</day>
<month>07</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="collection"><year>2016</year>
</pub-date>
<volume>6</volume>
<elocation-id>29838</elocation-id>
<history><date date-type="received"><day>25</day>
<month>04</month>
<year>2016</year>
</date>
<date date-type="accepted"><day>21</day>
<month>06</month>
<year>2016</year>
</date>
</history>
<permissions><copyright-statement>Copyright © 2016, Macmillan Publishers Limited</copyright-statement>
<copyright-year>2016</copyright-year>
<copyright-holder>Macmillan Publishers Limited</copyright-holder>
<license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0/"><pmc-comment>author-paid</pmc-comment>
<license-p>This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit <ext-link ext-link-type="uri" xlink:href="http://creativecommons.org/licenses/by/4.0/">http://creativecommons.org/licenses/by/4.0/</ext-link>
</license-p>
</license>
</permissions>
<abstract><p>The South Asian Monson (SAM) is one of the most intense climatic elements yet its initiation and variations are not well established. Dating the deposits of SAM wind-driven currents in IODP cores from the Maldives yields an age of 12. 9 Ma indicating an abrupt SAM onset, over a short period of 300 kyrs. This coincided with the Indian Ocean Oxygen Minimum Zone expansion as revealed by geochemical tracers and the onset of upwelling reflected by the sediment’s content of particulate organic matter. A weaker ‘proto-monsoon’ existed between 12.9 and 25 Ma, as mirrored by the sedimentary signature of dust influx. Abrupt SAM initiation favors a strong influence of climate in addition to the tectonic control, and we propose that the post Miocene Climate Optimum cooling, together with increased continentalization and establishment of the bipolar ocean circulation, i.e. the beginning of the modern world, shifted the monsoon over a threshold towards the modern system.</p>
</abstract>
</article-meta>
</front>
<body><p>The South Asian Monson (SAM) is a seasonal reversal of winds accompanied by changes in precipitation with heavy rain during the summer monsoon. It is one of the most intense annually recurring climatic elements and of immense importance in supplying moisture to the Indian subcontinent thus affecting human population and vegetation, as well as marine biota in the surrounding seas. The seasonal precipitation change is one of the SAM elements most noticed on land, whereas the reversal of the wind regime is the dominating driver of circulation in the central and northern Indian Ocean realm. In the Indian Ocean, this monsoonal circulation and its attendant oxygen minimum were emplaced during the Neogene<xref ref-type="bibr" rid="b1">1</xref>
(<xref ref-type="fig" rid="f1">Fig. 1A</xref>
). There is, however, an ongoing discussion about several critical aspects. These include (1) the timing of the monsoon intensification, which has been placed at ~7 to 8 Ma<xref ref-type="bibr" rid="b1">1</xref>
or at ~28.7–22 Ma<xref ref-type="bibr" rid="b2">2</xref>
<xref ref-type="bibr" rid="b3">3</xref>
<xref ref-type="bibr" rid="b4">4</xref>
<xref ref-type="bibr" rid="b5">5</xref>
, and therefore its relation to the high topographic relief linked to the uplift of the Tibetian-Himalayan orogeny<xref ref-type="bibr" rid="b2">2</xref>
<xref ref-type="bibr" rid="b6">6</xref>
; (2) the linkage between the monsoon and the evolution of global cooling<xref ref-type="bibr" rid="b7">7</xref>
; and (3) the interpretation of the establishment and fluctuations of the oxygen minimum zone (OMZ), as triggered by atmospheric circulation linked to the summer monsoon winds<xref ref-type="bibr" rid="b1">1</xref>
.</p>
<p>New data acquired during IODP Expedition 359 from the Inner Sea of the Maldives provide a previously unread archive that reveals an abrupt onset of the SAM-linked circulation pattern and its relationship to the long term Neogene climate cooling. In particular it registers ocean current fluctuations and changes of intermediate water mass properties for the last 25 myrs that are directly related to the monsoon. Data also reveal how the Maldives carbonate platform responded to the Early and early Middle Miocene sea level fluctuations through changes of the platform growth pattern and growth interruptions.</p>
<sec disp-level="1"><title>Results and Interpretations</title>
<p>Data collected during IODP Expediton 359 pertinent to the discussion of the SAM include stratigraphical, geophysical, and geochemical data that are displayed in <xref ref-type="fig" rid="f2">Figs 2</xref>
, <xref ref-type="fig" rid="f3">3</xref>
, <xref ref-type="fig" rid="f4">4</xref>
and <xref ref-type="table" rid="t1">Tables 1</xref>
and <xref ref-type="table" rid="t2">2</xref>
. These data are described in detail below, followed by an interpretation.</p>
<p>The Maldives archipelago is a carbonate edifice that is elevated between 2000 and 4000 m above the surrounding seafloor, and therefore shielded from riverine terrestrial input (<xref ref-type="fig" rid="f1">Fig. 1B,C</xref>
). It contains a north-south–oriented double row of reef-rimmed atolls that enclose the up to 500 m deep Inner Sea, which is a natural sediment trap with continuous carbonate deposition. Together with the surrounding banks the Inner Sea provides a tropical record of Neogene sea-level changes and changes of the ocean current regime.</p>
<p>The modern currents in the Maldives are directly linked to the seasonal SAM-driven reversing winds (<xref ref-type="fig" rid="f1">Fig. 1A</xref>
), which are directed westward in the winter and eastward in the summer thus depositing major sediment drift bodies<xref ref-type="bibr" rid="b8">8</xref>
<xref ref-type="bibr" rid="b9">9</xref>
<xref ref-type="bibr" rid="b10">10</xref>
. Seismically, the drift deposits are identified as convex outward prograding clinoforms that onlap and bury a succession of platform carbonates (<xref ref-type="fig" rid="f2">Figs 2</xref>
and S1). The base of these current deposits are herein used to date the onset of the regional wind system which is nowadays associated with the SAM. The underlying carbonate platforms display prograding pulses that are related to sea-level fluctuations<xref ref-type="bibr" rid="b9">9</xref>
and the global climate evolution during the past 25 myrs (<xref ref-type="fig" rid="f2">Figs 2</xref>
and S1). Changes in the interplay of these two processes produced breaks in the sedimentary pattern like interruptions of platform growth during sea-level lowerings. Surfaces that delimit packages with distinct growth characteristics are sequence boundaries, and their ages, thus, mark the turning points in the sedimentary evolution. Biostratigraphic data obtained during IODP Expedition 359 provide precise ages of these sequence boundaries (<xref ref-type="fig" rid="f3">Fig. 3</xref>
, <xref ref-type="table" rid="t1">Tables 1</xref>
and <xref ref-type="table" rid="t2">2</xref>
).</p>
<p>Examining the Maldives sedimentary system prior to the onset of the drift deposits indicates that sea-level fluctuations were the dominant agents in the sediment distribution and that monsoon related features were subordinate. The Maldives architecture with two N–S running carbonate banks was established during the Oligocene<xref ref-type="bibr" rid="b11">11</xref>
. Shrinking of the banks to a width of around 5 km ~ 24 Ma ago preceded an apparent restriction of the Inner Sea area in which sapropel-like organic rich layers, with total organic contents (TOC) of up to ~7% alternating with chalks are deposited between ~24 and ~21.5 Ma. High gamma ray values reflect TOC enriched intervals (<xref ref-type="fig" rid="f4">Fig. 4B</xref>
). Sapropel formation started at the Mi-1 event (ca. 23 Ma), an episode interpreted as substantial glaciation<xref ref-type="bibr" rid="b12">12</xref>
. From ~21.5 to ~17.2 Ma, the western carbonate banks increased in width through bank aggradation and eastward progradation of the bank edge into the Inner Sea (<xref ref-type="fig" rid="f2">Figs 2</xref>
and S1). The eastern banks during this time did not widen<xref ref-type="bibr" rid="b11">11</xref>
, but were segmented between ~19 and ~17.2 Ma through demise of banks thereby opening the Inner Sea to the Indian Ocean in the east and reducing the restriction of the basin (<xref ref-type="fig" rid="f1">Fig. 1B</xref>
)<xref ref-type="bibr" rid="b10">10</xref>
. This resulted in an overall reduction of organic matter deposition, although some intervals with higher organic contents remained (<xref ref-type="fig" rid="f4">Fig. 4B</xref>
). At ~17.2 Ma, i.e. at the sequence boundary (SB) of PS6, the aggrading/prograding platform growth changed to a predominantly aggradational mode in sequences PS6 and PS7 (~15.1 Ma) that is typical for the formation under a rising sea level. A turning point in platform reorganization occurred at the base of PS8 at ~15.1 Ma when the platform sequences PS8–PS10 stack in front of each other (<xref ref-type="fig" rid="f2">Fig. 2</xref>
). These prograding sequences reflect platform growth under an overall lowered sea level.</p>
<p>This platform evolution is clearly linked to global climate and sea level evolution<xref ref-type="bibr" rid="b12">12</xref>
<xref ref-type="bibr" rid="b13">13</xref>
<xref ref-type="bibr" rid="b14">14</xref>
(<xref ref-type="fig" rid="f4">Fig. 4</xref>
). The aggrading PS6 and PS7 package formed during the Miocene Climate Optimum (MCO) (<xref ref-type="fig" rid="f4">Fig. 4F</xref>
) with a high eustatic sea level, the start of the progradation falls within the time of the transition towards a cooler climate, with a global sea-level lowering and the expansion of the East Antarctic Ice Sheet which began at 13.9 Ma reflected by the Mi-3b event which in the Maldives coincides with the SB of PS9. This tracing of the global sea level evolution ended at ~12.9 Ma when ocean currents started to control the sedimentary system.</p>
<p>We deduce the wind pattern that likely is related to weak proto-monsoon system between 24 and 12.9 Ma from two lines of evidence. First, the eastward progradation of the platforms (<xref ref-type="fig" rid="f2">Fig. 2</xref>
) indicates westerly winds, i.e. summer monsoon winds, because carbonate platform progradation occurs preferentially towards the leeward side<xref ref-type="bibr" rid="b15">15</xref>
. Second, the magnetic susceptibility record from the Inner Sea sediments following<xref ref-type="bibr" rid="b16">16</xref>
is proposed to reflect eolian dust input (<xref ref-type="fig" rid="f4">Fig. 4D</xref>
). This flux from India and Asia is generally low and linked to the winter monsoon winds<xref ref-type="bibr" rid="b17">17</xref>
, which transport dust as far as 5°S<xref ref-type="bibr" rid="b18">18</xref>
. The investigated area, now positioned between 4.5°–5°N, was at 5°S at around 31 Ma and crossed the equator around 20 Ma<xref ref-type="bibr" rid="b19">19</xref>
. Magnetic susceptibility rises stepwise in deposits formed between ~24 and ~20 Ma with peaks of high values at ~22.6 and ~21.5 Ma, followed by a stabilization from ~20.5 Ma until 13.5 Ma (<xref ref-type="fig" rid="f4">Fig. 4D</xref>
).</p>
<p>The major and abrupt turning in the sedimentary and geochemical record occurs at ~12.9 Ma (<xref ref-type="fig" rid="f4">Fig. 4</xref>
). The sea-level controlled platform growth was greatly reduced leading to the demise of some Maldives platforms<xref ref-type="bibr" rid="b8">8</xref>
<xref ref-type="bibr" rid="b9">9</xref>
<xref ref-type="bibr" rid="b10">10</xref>
. This partial drowning went hand in hand with the onset of current-dominated deposition of drift sequence DS 1 (<xref ref-type="fig" rid="f2">Fig. 2</xref>
). The depositional turnover is along the same seismic reflection throughout the entire Inner Sea, documenting widespread and coeval occurrence of drift deposits<xref ref-type="bibr" rid="b8">8</xref>
<xref ref-type="bibr" rid="b9">9</xref>
<xref ref-type="bibr" rid="b10">10</xref>
(<xref ref-type="supplementary-material" rid="S1">Figure S1</xref>
). This profound change in the depositional dynamics is the direct physical evidence of the onset of vigorous wind-driven currents with the dominance of westerlies, as is also the case for the modern summer monsoon winds in the Maldives<xref ref-type="bibr" rid="b9">9</xref>
<xref ref-type="bibr" rid="b10">10</xref>
<xref ref-type="bibr" rid="b11">11</xref>
.</p>
<p>Platform drowning seems to be the combined product of change in sea level and ocean circulation. As sea level started to fall from the height of the MCO, platforms were repeatedly exposed. During the subsequent sea-level rises strong currents swept the platforms<xref ref-type="bibr" rid="b8">8</xref>
, thus preventing the re-establishment of shallow-water ecosystems and causing the demise of several platform segments. A concomitant higher particulate organic matter (POM) accumulation (<xref ref-type="fig" rid="f4">Fig. 4B</xref>
) shows initiation of increased upwelling. Today the Maldives act as a flow barrier to the reversing wind-driven currents, triggering upwelling cells downstream of the atolls with high primary productivity<xref ref-type="bibr" rid="b20">20</xref>
causing higher chlorophyll a concentrations during the winter monsoon flow<xref ref-type="bibr" rid="b21">21</xref>
. Thus, the variations in the organic contents in the Inner Sea sediments of DS1 likely record the onset and intensity fluctuations of this upwelling.</p>
<p>The increase in POM content occurs in concert with an expansion of the Indian OMZ. Wind-driven upwelling during the summer monsoon generates the OMZ in the Arabian Sea, and the extent of this zone over geological time reflects variations in atmospheric and oceanic circulation<xref ref-type="bibr" rid="b1">1</xref>
. The investigated part of the Inner Sea lies at 300 and 500 m water depth and is within the OMZ. We use fluctuations in the Mn concentration to trace variations of the OMZ through time, since the flux of Mn into sediment forming within the OMZ is reduced, because of elevated solubility of Mn in O<sub>2</sub>
-deficient waters<xref ref-type="bibr" rid="b22">22</xref>
. Between 25 and ~12.5 Ma the Mn/Ca ratio shows a trend to decreasing values with some outliers (<xref ref-type="fig" rid="f4">Fig. 4C</xref>
). At ~12.9 Ma the Mn/Ca ratio shows a general drop, punctuated by short excursions towards higher values up to 10 Ma. The expanded OMZ appeared fairly stable between 10 and ~5 Ma. In younger deposits, Mn/Ca ratio fluctuations record variations of the OMZ extension and finally a retraction beyond the Maldives after ~0.8 Ma. Whereas OMZ expansion and POM content increase seem to be coupled, POM content decreases at ~8 Ma, a time with a stable and extended OMZ. The independent physical stratigraphic record and geochemical lines of evidence from cores of the Inner Sea thus unequivocally place the onset of the SAM circulation at ~12.9 Ma. This age was previously proposed for the SAM wind system onset<xref ref-type="bibr" rid="b23">23</xref>
, based on the stable isotope analysis of planktonic foraminifera in the Arabian Sea.</p>
<p>Magnetic susceptibility increases in Maldives deposits formed between ~13.5 to ~11 Ma, and reach maximum values in ~11 to ~8.1 Ma old sediments. Deposits younger than ~8.1 Ma display lower magnetic susceptibility values and start to decrease at ~6 Ma. This decrease of the magnetic susceptibility values parallels a change in drift architecture beginning in DS 5 at~ 6.7 Ma (<xref ref-type="fig" rid="f2">Fig. 2</xref>
). In older sequences, small west-directed drifts are observed at the eastern side of the Inner Sea but these became inactive at ~6.7 Ma and moats along the atoll edges developed reflecting the onset of a N to NE directed bottom current (<xref ref-type="supplementary-material" rid="S1">Figure S1</xref>
).</p>
</sec>
<sec disp-level="1"><title>Discussion</title>
<p>Together, the direct physical record in the drift deposits and the proxies retrieved in the cores provide a robust chronology of the evolution of the current pattern on the Maldives which nowadays is controlled by the winds of the SAM. Beginning at 24 Ma the evolution and the controlling factors of the Neogene SAM can be drawn as follows. The stepwise increase of dust deposition to the Maldives between 24 and 20 Ma encompasses the time window for the Neogene Asian desertification from loess deposits in China at 22 Ma<xref ref-type="bibr" rid="b3">3</xref>
, with first sediments indicative of widespread arid conditions at 25 Ma<xref ref-type="bibr" rid="b4">4</xref>
and ~28.7–22.6 Ma respectively<xref ref-type="bibr" rid="b5">5</xref>
. Modeling indicate that this desertification after the retreat of the Paratethys further facilitated the shift from a temperate to a continental central Asian climate<xref ref-type="bibr" rid="b24">24</xref>
<xref ref-type="bibr" rid="b25">25</xref>
therefore providing a source of eolian dust. A stable and continuous dust input is achieved at 20 Ma (<xref ref-type="fig" rid="f4">Fig. 4D,E</xref>
). During this stage, winds in the Maldives caused the eastward progradation of the western atolls but were not strong enough to generate drift deposits. This changed with the sudden strengthening of the wind and resulting currents at 12.9 Ma that resemble the modern strength of the monsoon system. Therefore, the circulation between ~20 and 12.9 Ma may be addressed as a proto-monsoon to differentiate it from the vigorous wind system which abruptly established at ~12.9 Ma, as imaged by the onset of drift deposition in the Inner Sea. Magnetic susceptibility values also point towards a weaker dust export from the Indian and Asian mainland during this time interval.</p>
<p>The abrupt onset of the strong modern monsoon system at ~12.9 Ma is pervasive in our data set. The rates of changes in the SAM dynamics over a few 100 kyrs at best as revealed by our data clearly indicate that the onset of the modern monsoon winds occurred much too rapid to be solely explained by tectonic processes such as the uplift of the Tibetian-Himalayan Orogen<xref ref-type="bibr" rid="b2">2</xref>
. A series of factors, including global paleoclimate, the distribution of the continents, closure of seaways, and the concomitant changes in the global circulation pattern are responsible for the observed pattern of weak proto-monsoon and the abrupt SAM strengthening. This intensification is also reconstructed from upwelling indicators in the Arabian Sea<xref ref-type="bibr" rid="b23">23</xref>
.</p>
<p>This onset by ~900 kyrs postdates the end of the Middle Miocene climate transition<xref ref-type="bibr" rid="b26">26</xref>
, i.e. the time of growth of the East Antarctic Ice Sheet (<xref ref-type="fig" rid="f4">Fig. 4F</xref>
), as well as of global and of deep water cooling (<xref ref-type="fig" rid="f4">Fig. 4F</xref>
). The deep-water circulation system at this time also developed a bi-polar aspect, when the North Atlantic end member became an important component, complementing the persistent southern source of deep water circulation<xref ref-type="bibr" rid="b27">27</xref>
<xref ref-type="bibr" rid="b28">28</xref>
. The climate and circulation changes also coincide with the increased continentalization of climate and seasonality as well as the progressive closure of the Tethys seaway that resulted in increased atmospheric gradients and seasonal wind speeds<xref ref-type="bibr" rid="b12">12</xref>
.</p>
<p>Therefore, we see the abrupt intensification of the summer monsoon related to stepping over a threshold that was created by the closure of the Tethys and the uplift of the Tibetian-Himalayan Orogen that created a strong seasonal atmospheric pattern and was compounded by global cooling and the onset of the oceanic and circulation during the late middle Miocene. The respective influence of each factor will have to be assessed by modeling that now is possible as the exact timing of the strengthening of the SAM is determined by this data set.</p>
</sec>
<sec disp-level="1"><title>Methods</title>
<sec disp-level="2"><title>Seismics and hydroacoustics</title>
<p>Seismic signals were generated by two clustered GI-guns, each with a volume of 45 in<sup>3</sup>
for a 105-in<sup>3</sup>
generated injector volume. A digital 144-channel streamer array with an active length of 600 m and an asymmetric group interval was used during the cruises M74/4 with r/v METEOR (2007) and SO236 with r/v SONNE (2014). The data was digitized with seven SeaMUX 24 channel 24 bit digitizing modules, configured in six multiple arrays totaling 144 channels. The shot point distance during the entire cruise was 12.5 m. The dominant frequencies center around 100–120 Hz. Processing of reflection seismic data was done using the software package ProMAX 2D (Halliburton-Landmark). The data is processed to zero phase, filtered in time and f-k domain, and corrected for dip moveout. In basinal areas a suppression of multiple reflections was achieved by predictive deconvolution of pre-stacked data. Amplitude losses were compensated by a power function. Interpretation and visualization was done using the software package Petrel (Schlumberger). Depending on depth, the vertical resolution of the newly acquired data is approximately 4–6 m. Seismic interpretation was performed on time–migrated data in time domain. As the continuity of the reflections in part is weak, the instantaneous phase was also used for tracing. Seismic data were linked to core data using check shot surveys and downhole logging data.</p>
<p>Multibeam imaging was performed with a hull-mounted EM120 multibeam echosounder (Kongsberg Maritime) during the cruises M74/4 with r/v METEOR (2007) and SO236 with r/v SONNE (2014). The EM120 is a high-resolution sea-floor-mapping system with 256 simultaneous beams operating in the 12 kHz range, and covering a swath width of up to 5.5 times the water depth. The beams are stabilized for roll, pitch, and yaw. Data obtained was post-processed using the software package Neptune (Kongsberg Maritime). Visualization including gridding and refining of surfaces was done using the software packages Caris and Fledermaus (IVS 3D).</p>
</sec>
<sec disp-level="2"><title>Biostratigraphy</title>
<p>Calcareous nannofossils and foraminifera were studied at all sites in core catcher samples. Samples from core sections were also examined when a more refined age determination was necessary and when time permitted. Biostratigraphic events, mainly the first occurrence (FO; or base) and last occurrence (LO; or top) of the well-established diagnostic species, are tied to the geomagnetic polarity timescale of ref. <xref ref-type="bibr" rid="b29">29</xref>
. The depth of the events was calculated as the midpoint between the two samples that enclose each event. Applying the results of the check shot surveys, a direct correlation of the seismic stratigraphy and the biostratigraphy was achieved. Dating of the drift onset was a high-priority we cored the key interval at four sites. Key data is provided by the last occurrence of <italic>Sphenolithus heteromorphus</italic>
, the last common occurrence of <italic>Cyclicargolithus floridanus</italic>
and the first occurrence of <italic>Fohsella fohsi</italic>
, each of which occur are ell-established as occurring at about 13.5 Ma. At all four sites these three events occur significantly below the base of the drift so this is a robust maximum age for the event. The minimum age cannot be tied down with similar certainty but our age models based on multiple events (<xref ref-type="fig" rid="f3">Fig. 3</xref>
) suggested a range of ages from 13.1 to 12.8 Ma, with one outlier age of 12.2 Ma. The outlier was site U1468, which was near the basin centre where the onset of drift deposition may have been delayed and at which sandwaves may have affected the base of the drift. So we have adopted a median age of 12.9 Ma, with an uncertainty of ca. +/−0.4 Ma.</p>
</sec>
<sec disp-level="2"><title>Downhole Logging</title>
<p>The Hostile Environment Natural Gamma Ray Sonde (HNGS) which was deployed during downhole wireline logging uses two bismuth germanate scintillation detectors and five-window spectroscopy to determine concentrations of potassium (in weight percent), thorium (in parts per million), and uranium (in parts per million) from the characteristic gamma ray energies of isotopes in the 40 K, 232Th, and 238U radioactive decay series, which dominate the natural radiation spectrum. At Expedition 359 Sites U1467 and U1468, spectral gamma ray data show that uranium is the primary contributor to variability in total gamma ray. Variations in the total gamma ray record shown in <xref ref-type="fig" rid="f4">Fig. 4B</xref>
can therefore be interpreted as changes in uranium and therefore only the total gamma ray intensity is shown in <xref ref-type="fig" rid="f2">Fig. 2A</xref>
.</p>
<p>The Magnetic Susceptibility Sonde (MSS) is a nonstandard wireline tool designed by Lamont-Doherty Earth Observatory (LDEO). It measures the ease with which formations are magnetized when subjected to a magnetic field. The ease of magnetization, or susceptibility, is ultimately related to the concentration and composition (size, shape, and mineralogy) of magnetic minerals in the formation. The MSS dual-coil sensor provides ~40 cm resolution measurements, with ~20 cm depth of horizontal investigation. Although relative changes in susceptibility are likely accurate, the absolute values measured by the magnetic susceptibility tool are still in the process of being calibrated and should be treated with caution. The MSS was run as the lowermost tool in the triple combo tool string, using a specially developed data translation cartridge to enable the MSS to be run in combination with the Schlumberger tools. Magnetic susceptibility data from the MSS are plotted as uncalibrated units multiplied by a factor of 102 (<xref ref-type="fig" rid="f4">Fig. 4D</xref>
). Although relative changes in susceptibility are likely accurate, the absolute values measured by the magnetic susceptibility tool should be treated with care.</p>
</sec>
<sec disp-level="2"><title>Physical properties</title>
<p>Whole-round cores were measured with the Natural Gamma Radiation Logger using a system designed and built at the Integrated Ocean Drilling Program-US Implementing Organization (USIO) (Texas A&M University, USA). A measurement run consisted of two sample positions, 10 cm apart, for a total of 16 measurements per 150 cm section. Counting time was chosen as 5 min per position, or ~10 min per core, yielding statistically significant energy spectra. Natural gamma ray data measured on whole round cores are reported in counts per second (cps).</p>
</sec>
<sec disp-level="2"><title>Geochemistry</title>
<p>The samples used for the Mn/Ca analyses were obtained from the interstitial water squeezed cakes and in instance where no material was available, from the head space samples. The samples were freeze dried and 10 mg of ground sample dissolved in equal amounts (5 cm3) of 2% acetic acid and 2% nitric acid. After digestion the solution was centrifuged and the supernatant removed for analysis using a Leeman ICP-AES. Standardization was achieved using three solutions to which varying amounts of stock Mn solution had been added and which contained equivalent concentrations of calcium and magnesium to the samples.</p>
</sec>
</sec>
<sec disp-level="1"><title>Additional Information</title>
<p><bold>How to cite this article</bold>
: Betzler, C. <italic>et al</italic>
. The abrupt onset of the modern South Asian Monsoon winds. <italic>Sci. Rep.</italic>
<bold>6</bold>
, 29838; doi: 10.1038/srep29838 (2016).</p>
</sec>
<sec sec-type="supplementary-material" id="S1"><title>Supplementary Material</title>
<supplementary-material id="d33e23" content-type="local-data"><caption><title>Supplementary Information</title>
</caption>
<media xlink:href="srep29838-s1.pdf"></media>
</supplementary-material>
</sec>
</body>
<back><ack><p>This research used samples and data provided by the International Ocean Discovery Program (IODP). Research would not have been possible without the dedicated effort of the drilling crew, ship’s crew and scientific staff of the Drillship JOIDES Resolution. The expedition was funded by the US National Science Foundation (NSF); the European Consortium for Ocean Research Drilling (ECORD); the Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); the Ministry of Science and Technology (People’s Republic of China); the Korea Institute of Geoscience and Mineral Resources; the Australian Research Council and the New Zealand Institute for Geological and Nuclear Sciences; and the Ministry of Earth Sciences (India). The German Federal Ministry of Education and Research is thanked for funding the seismic surveys (03S0405, 03G0236A). The very constructive and helpful comments of two reviewers are gratefully acknowledged.</p>
</ack>
<ref-list><ref id="b1"><mixed-citation publication-type="journal"><name><surname>Kroon</surname>
<given-names>D.</given-names>
</name>
, <name><surname>Steens</surname>
<given-names>T.</given-names>
</name>
& <name><surname>Troelstra</surname>
<given-names>S. R.</given-names>
</name>
<article-title>Onset of monsoonal related upwelling in the western Arabian Sea as revealed by planktonic foraminifers</article-title>
. <source>Proc. Ocean Drill. Proj. Sci. Results</source>
<volume>117</volume>
, <fpage>257</fpage>
–<lpage>263</lpage>
(<year>1991</year>
).</mixed-citation>
</ref>
<ref id="b2"><mixed-citation publication-type="journal"><name><surname>Clift</surname>
<given-names>P. D.</given-names>
</name>
<etal></etal>
. <article-title>Correlation of Himalayan exhumation rates and Asian monsoon intensity</article-title>
. <source>Nature Geosci.</source>
<volume>1</volume>
, <fpage>875</fpage>
–<lpage>880</lpage>
(<year>2008</year>
).</mixed-citation>
</ref>
<ref id="b3"><mixed-citation publication-type="journal"><name><surname>Guo</surname>
<given-names>Z. T.</given-names>
</name>
<etal></etal>
. <article-title>Onset of Asian desertification by 22 Myr ago inferred from loess deposits in China</article-title>
. <source>Nature</source>
<volume>416</volume>
, <fpage>159</fpage>
–<lpage>163</lpage>
(<year>2002</year>
).<pub-id pub-id-type="pmid">11894089</pub-id>
</mixed-citation>
</ref>
<ref id="b4"><mixed-citation publication-type="journal"><name><surname>Qiang</surname>
<given-names>X. K.</given-names>
</name>
<etal></etal>
. <article-title>New eolian red clay sequence on the western Chinese Loess Plateau linked to onset of Asian desertification about 25 Ma ago</article-title>
. <source>Science China Earth Sciences</source>
<volume>54</volume>
, <fpage>136</fpage>
–<lpage>144</lpage>
(<year>2011</year>
).</mixed-citation>
</ref>
<ref id="b5"><mixed-citation publication-type="journal"><name><surname>Zheng</surname>
<given-names>H.</given-names>
</name>
<etal></etal>
. <article-title>Late Oligocene–early Miocene birth of the Taklimakan Desert</article-title>
. <source>Proceedings of the National Academy of Sciences</source>
<volume>112</volume>
, <fpage>7662</fpage>
–<lpage>7667</lpage>
, doi: <pub-id pub-id-type="doi">10.1073/pnas.1424487112</pub-id>
(<year>2015</year>
).</mixed-citation>
</ref>
<ref id="b6"><mixed-citation publication-type="journal"><name><surname>Prell</surname>
<given-names>W. L.</given-names>
</name>
& <name><surname>Kutzbach</surname>
<given-names>J. E.</given-names>
</name>
<article-title>Sensivity of the Indian monsoon to forcing parameters and implications for its evolution</article-title>
. <source>Nature</source>
<volume>360</volume>
, <fpage>647</fpage>
–<lpage>652</lpage>
(<year>1992</year>
).</mixed-citation>
</ref>
<ref id="b7"><mixed-citation publication-type="journal"><name><surname>Gupta</surname>
<given-names>A. K.</given-names>
</name>
, <name><surname>Singh</surname>
<given-names>R. K.</given-names>
</name>
, <name><surname>Joseph</surname>
<given-names>S.</given-names>
</name>
& <name><surname>Thomas</surname>
<given-names>E.</given-names>
</name>
<article-title>Indian Ocean high-productivity event (10–8 Ma): Linked to global cooling or to the initiation of the Indian monsoons?</article-title>
<source>Geology</source>
<volume>32</volume>
, <fpage>753</fpage>
–<lpage>756</lpage>
(2004).</mixed-citation>
</ref>
<ref id="b8"><mixed-citation publication-type="journal"><name><surname>Betzler</surname>
<given-names>C.</given-names>
</name>
<etal></etal>
. <article-title>Monsoonal-induced partial carbonate platform drowning (Maldives, Indian Ocean)</article-title>
. <source>Geology</source>
<volume>37</volume>
, <fpage>867</fpage>
–<lpage>870</lpage>
(<year>2009</year>
).</mixed-citation>
</ref>
<ref id="b9"><mixed-citation publication-type="journal"><name><surname>Betzler</surname>
<given-names>C.</given-names>
</name>
<etal></etal>
. <article-title>Sea-level and ocean-current control on carbonate-platform growth, Maldives</article-title>
. <source>Indian Ocean. Bas. Res.</source>
<volume>25</volume>
, <fpage>172</fpage>
–<lpage>196</lpage>
(<year>2013</year>
).</mixed-citation>
</ref>
<ref id="b10"><mixed-citation publication-type="journal"><name><surname>Lüdmann</surname>
<given-names>T.</given-names>
</name>
, <name><surname>Kalvelage</surname>
<given-names>C.</given-names>
</name>
, <name><surname>Betzler</surname>
<given-names>C.</given-names>
</name>
, <name><surname>Fürstenau</surname>
<given-names>J.</given-names>
</name>
& <name><surname>Hübscher</surname>
<given-names>C.</given-names>
</name>
, <article-title>The Maldives, a giant isolated carbonate platform dominated by bottom currents. Marine and Petrol</article-title>
. <source>Geol.</source>
<volume>43</volume>
, <fpage>326</fpage>
–<lpage>340</lpage>
(<year>2013</year>
).</mixed-citation>
</ref>
<ref id="b11"><mixed-citation publication-type="journal"><name><surname>Aubert</surname>
<given-names>O.</given-names>
</name>
& <name><surname>Droxler</surname>
<given-names>A. W.</given-names>
</name>
<article-title>General Cenozoic evolution of the Maldives carbonate system (equatorial Indian Ocean)</article-title>
. <source>Bull. Cent. Rech. Explor.-Prod. Elf-Aquitaine</source>
<volume>16</volume>
, <fpage>113</fpage>
–<lpage>136</lpage>
(<year>1992</year>
).</mixed-citation>
</ref>
<ref id="b12"><mixed-citation publication-type="journal"><name><surname>Miller</surname>
<given-names>K. G.</given-names>
</name>
, <name><surname>Wright</surname>
<given-names>J. D.</given-names>
</name>
& <name><surname>Fairbanks</surname>
<given-names>R. G.</given-names>
</name>
<article-title>Unlocking the ice house: Oligocene-Miocene oxygen isotopes, eustasy, and margin erosion</article-title>
. <source>Jour. Geophys. Res., B</source>
<volume>96</volume>
, <fpage>6829</fpage>
–<lpage>6848</lpage>
(<year>1991</year>
).</mixed-citation>
</ref>
<ref id="b13"><mixed-citation publication-type="journal"><name><surname>Zachos</surname>
<given-names>J.</given-names>
</name>
, <name><surname>Pagani</surname>
<given-names>M.</given-names>
</name>
, <name><surname>Sloan</surname>
<given-names>L.</given-names>
</name>
, <name><surname>Thomas</surname>
<given-names>E.</given-names>
</name>
& <name><surname>Billups</surname>
<given-names>K.</given-names>
</name>
, <article-title>Trends, Rhythms, and Aberrations in Global Climate 65 Ma to Present</article-title>
. <source>Science</source>
<volume>292</volume>
, <fpage>686</fpage>
–<lpage>693</lpage>
(<year>2001</year>
).<pub-id pub-id-type="pmid">11326091</pub-id>
</mixed-citation>
</ref>
<ref id="b14"><mixed-citation publication-type="journal"><name><surname>Miller</surname>
<given-names>K. G.</given-names>
</name>
<etal></etal>
. <article-title>The Phanerozoic record of global sea-level change</article-title>
. <source>Science</source>
<volume>310</volume>
, <fpage>1293</fpage>
–<lpage>1298</lpage>
(<year>2005</year>
).<pub-id pub-id-type="pmid">16311326</pub-id>
</mixed-citation>
</ref>
<ref id="b15"><mixed-citation publication-type="journal"><name><surname>Eberli</surname>
<given-names>G. P.</given-names>
</name>
& <name><surname>Ginsburg</surname>
<given-names>R. N.</given-names>
</name>
<article-title>Segmentation and coalescence of Cenozoic carbonate platforms, northwestern Great Bahama Bank</article-title>
. <source>Geology</source>
<volume>15</volume>
, <fpage>75</fpage>
–<lpage>79</lpage>
(<year>1987</year>
).</mixed-citation>
</ref>
<ref id="b16"><mixed-citation publication-type="journal"><name><surname>Maher</surname>
<given-names>B. A.</given-names>
</name>
<article-title>The magnetic properties of Quaternary aeolian dusts and sediments, and their palaeoclimatic significance. Aeolian</article-title>
<source>Research</source>
<volume>3</volume>
, <fpage>87</fpage>
–<lpage>144</lpage>
, doi: <ext-link ext-link-type="uri" xlink:href="http://dx.doi.org/10.1016/j.aeolia.2011.01.005">http://dx.doi.org/10.1016/j.aeolia.2011.01.005</ext-link>
(<year>2011</year>
).</mixed-citation>
</ref>
<ref id="b17"><mixed-citation publication-type="journal"><name><surname>Aston</surname>
<given-names>S. R.</given-names>
</name>
, <name><surname>Chester</surname>
<given-names>R.</given-names>
</name>
, <name><surname>Johnson</surname>
<given-names>L. R.</given-names>
</name>
& <name><surname>Padgham</surname>
<given-names>R. C.</given-names>
</name>
, <article-title>Eolian dust from the lower atmosphere of the eastern Atlantic and Indian Oceans, China Sea and Sea of Japan</article-title>
. <source>Mar. Geol.</source>
<volume>14</volume>
, <fpage>15</fpage>
–<lpage>28</lpage>
(<year>1973</year>
).</mixed-citation>
</ref>
<ref id="b18"><mixed-citation publication-type="journal"><name><surname>Grand</surname>
<given-names>M. M.</given-names>
</name>
<etal></etal>
. <article-title>Dust deposition in the eastern Indian Ocean: The ocean perspective from Antarctica to the Bay of Bengal</article-title>
. <source>Glob. Biogeochem. Cyc.</source>
<volume>29</volume>
, <fpage>357</fpage>
–<lpage>374</lpage>
(<year>2015</year>
).</mixed-citation>
</ref>
<ref id="b19"><mixed-citation publication-type="journal">van Hinsbergen <etal></etal>
. <article-title>D. J. J. A Paleolatitude Calculator for Paleoclimate Studies</article-title>
. <source>PLos One</source>
<volume>10</volume>
, <fpage>e0126946</fpage>
(<year>2015</year>
).<pub-id pub-id-type="pmid">26061262</pub-id>
</mixed-citation>
</ref>
<ref id="b20"><mixed-citation publication-type="journal"><name><surname>Sasamal</surname>
<given-names>S. K.</given-names>
</name>
<article-title>Island wake circulation off Maldives during boreal winter, as visualised with MODIS derived chlorophyll-a data and other satellite measurements</article-title>
. <source>Int. J. Rem. Sensing</source>
<volume>28</volume>
, <fpage>891</fpage>
–<lpage>903</lpage>
(<year>2007</year>
).</mixed-citation>
</ref>
<ref id="b21"><mixed-citation publication-type="journal"><name><surname>de Vos</surname>
<given-names>A.</given-names>
</name>
, <name><surname>Pattiaratchi</surname>
<given-names>C. B.</given-names>
</name>
& <name><surname>Wijeratne</surname>
<given-names>E. M. S.</given-names>
</name>
<article-title>Surface circulation and upwelling patterns around Sri Lanka</article-title>
. <source>Biogeosci.</source>
<volume>11</volume>
, <fpage>5909</fpage>
–<lpage>5930</lpage>
(<year>2014</year>
).</mixed-citation>
</ref>
<ref id="b22"><mixed-citation publication-type="journal"><name><surname>Dickens</surname>
<given-names>G. R.</given-names>
</name>
& <name><surname>Owen</surname>
<given-names>R. M.</given-names>
</name>
<article-title>Late Miocene-Early Pliocene manganese redirection in the central Indian Ocean: Expansion of the Intermediate</article-title>
<source>Water oxygen minimum zone. Paleocean.</source>
<volume>9</volume>
, <fpage>169</fpage>
–<lpage>181</lpage>
(<year>1994</year>
).</mixed-citation>
</ref>
<ref id="b23"><mixed-citation publication-type="journal"><name><surname>Gupta</surname>
<given-names>K.</given-names>
</name>
, <name><surname>Yuvaraja</surname>
<given-names>A.</given-names>
</name>
, <name><surname>Prakasam</surname>
<given-names>M.</given-names>
</name>
, <name><surname>Clemens</surname>
<given-names>S. C.</given-names>
</name>
& <name><surname>Velu</surname>
<given-names>A.</given-names>
</name>
<article-title>Evolution of the South Asian monsoon wind system since the late Middle Miocene</article-title>
. <source>Palaeogeogr., Palaeoclim. Palaeoecol.</source>
<volume>438</volume>
, <fpage>160</fpage>
–<lpage>167</lpage>
(<year>2015</year>
).</mixed-citation>
</ref>
<ref id="b24"><mixed-citation publication-type="journal"><name><surname>Ramstein</surname>
<given-names>G.</given-names>
</name>
, <name><surname>Fluteau</surname>
<given-names>F.</given-names>
</name>
, <name><surname>Besse</surname>
<given-names>J.</given-names>
</name>
& <name><surname>Joussaume</surname>
<given-names>S.</given-names>
</name>
<article-title>Effect of orogeny, plate motion and land-sea distribution on Eurasian climate change over the past 30 million years</article-title>
. <source>Nature</source>
<volume>386</volume>
, <fpage>788</fpage>
–<lpage>795</lpage>
(<year>1997</year>
).</mixed-citation>
</ref>
<ref id="b25"><mixed-citation publication-type="journal"><name><surname>Fluteau</surname>
<given-names>F.</given-names>
</name>
, <name><surname>Ramstein</surname>
<given-names>G.</given-names>
</name>
& <name><surname>Besse</surname>
<given-names>J.</given-names>
</name>
<article-title>Simulating the evolution of the Asian and African monsoons during the past 30 Myr using an atmospheric general circulation model</article-title>
. <source>Journal of Geophysical Research: Atmospheres</source>
<volume>104</volume>
, <fpage>11995</fpage>
–<lpage>12018</lpage>
, doi: <pub-id pub-id-type="doi">10.1029/1999JD900048</pub-id>
(<year>1999</year>
).</mixed-citation>
</ref>
<ref id="b26"><mixed-citation publication-type="journal"><name><surname>Flower</surname>
<given-names>B. P.</given-names>
</name>
& <name><surname>Kennett</surname>
<given-names>J. P.</given-names>
</name>
<article-title>The middle Miocene climatic transition: East Antarctic ice sheet development, deep ocean circulation and global carbon cycling</article-title>
. <source>Palaeogeogr., Palaeoclimatol., Palaeoecol.</source>
<volume>108</volume>
, <fpage>537</fpage>
–<lpage>555</lpage>
(<year>1994</year>
).</mixed-citation>
</ref>
<ref id="b27"><mixed-citation publication-type="journal"><name><surname>Poore</surname>
<given-names>H. R.</given-names>
</name>
, <name><surname>Samworth</surname>
<given-names>R.</given-names>
</name>
, <name><surname>White</surname>
<given-names>N. J.</given-names>
</name>
, <name><surname>Jones</surname>
<given-names>S. M.</given-names>
</name>
& <name><surname>McCave</surname>
<given-names>I. N.</given-names>
</name>
<article-title>Neogene overflow of Northern Component Water at the Greenland-Scotland Ridge</article-title>
. <source>Geochemistry, Geophysics, Geosystems</source>
<volume>7</volume>
, n/a-n/a, doi: <pub-id pub-id-type="doi">10.1029/2005GC001085</pub-id>
(<year>2006</year>
).</mixed-citation>
</ref>
<ref id="b28"><mixed-citation publication-type="journal"><name><surname>Wright</surname>
<given-names>J. D.</given-names>
</name>
& <name><surname>Miller</surname>
<given-names>K. G.</given-names>
</name>
<article-title>Control of North Atlantic Deep Water Circulation by the Greenland-Scotland Ridge</article-title>
. <source>Paleoceanography</source>
<volume>11</volume>
, <fpage>157</fpage>
–<lpage>170</lpage>
, doi: <pub-id pub-id-type="doi">10.1029/95PA03696</pub-id>
(<year>1996</year>
).</mixed-citation>
</ref>
<ref id="b29"><mixed-citation publication-type="journal"><name><surname>Gradstein</surname>
<given-names>F. M.</given-names>
</name>
, <name><surname>Ogg</surname>
<given-names>J. G.</given-names>
</name>
, <name><surname>Schmitz</surname>
<given-names>M. D.</given-names>
</name>
& <name><surname>Ogg</surname>
<given-names>G. M.</given-names>
</name>
<source>The Geological Time Scale 2012</source>
. Elsevier, Amsterdam (<year>2012</year>
).</mixed-citation>
</ref>
<ref id="b30"><mixed-citation publication-type="journal"><name><surname>Holbourn</surname>
<given-names>A.</given-names>
</name>
, <name><surname>Kuhnt</surname>
<given-names>W.</given-names>
</name>
, <name><surname>Schulz</surname>
<given-names>M.</given-names>
</name>
& <name><surname>Erlenkeuser</surname>
<given-names>H.</given-names>
</name>
<article-title>Impacts of orbital forcing and atmospheric carbon dioxide on Miocene ice-sheet expansion</article-title>
. <source>Nature</source>
<volume>438</volume>
, <fpage>483</fpage>
–<lpage>487</lpage>
(<year>2005</year>
).<pub-id pub-id-type="pmid">16306989</pub-id>
</mixed-citation>
</ref>
<ref id="b31"><mixed-citation publication-type="journal"><name><surname>Holbourn</surname>
<given-names>W.</given-names>
</name>
<name><surname>Kuhnt</surname>
<given-names>K. G. D.</given-names>
</name>
<name><surname>Kochhann</surname>
<given-names>N.</given-names>
</name>
& <name><surname>Andersen</surname>
<given-names>K. J. S.</given-names>
</name>
<article-title>Meier, Global perturbation of the carbon cycle at the onset of the Miocene Climatic Optimum</article-title>
. <source>Geology</source>
, <fpage>123</fpage>
–<lpage>126</lpage>
(<year>2015</year>
).</mixed-citation>
</ref>
<ref id="b32"><mixed-citation publication-type="journal"><name><surname>Reuter</surname>
<given-names>M.</given-names>
</name>
<etal></etal>
. <article-title>The Oligo-/Miocene Qom Formation (Iran): evidence for an early Burdigalian restriction of the Tethyan Seaway and closure of its Iranian gateways</article-title>
. <source>Int. J. Earth Sci.</source>
<volume>98</volume>
, <fpage>627</fpage>
–<lpage>650</lpage>
(<year>2009</year>
).</mixed-citation>
</ref>
<ref id="b33"><mixed-citation publication-type="journal"><name><surname>Taylforth</surname>
<given-names>J. E.</given-names>
</name>
<etal></etal>
. <article-title>Middle Miocene (Langhian) sapropel formation in the easternmost Mediterranean deep-water basin: Evidence from northern Cyprus. Marine and Petrol</article-title>
. <source>Geol</source>
. <volume>57</volume>
, <fpage>521</fpage>
–<lpage>536</lpage>
, doi: <ext-link ext-link-type="uri" xlink:href="http://dx.doi.org/10.1016/j.marpetgeo.2014.04.015">http://dx.doi.org/10.1016/j.marpetgeo.2014.04.015</ext-link>
(<year>2014</year>
).</mixed-citation>
</ref>
</ref-list>
<fn-group><fn><p><bold>Author Contributions</bold>
All authors were shipboard scientists of IODP Expedition 359. C.L.B. and G.P.E. acted as co-chiefs and wrote the manuscript; D.K. and J.D.W. were leading the stratigraphic effort, P.K.S. and B.N.N. performed geochemical and sedimentological analyses, C.A.A.-Z. coordinated the work and performed micropaleontological research, M.A.-G., O.M.B., C.L.B., J.A.G., S.H., S.H., M.I., L.G., L.L., J.C.L., A.L.H.M., T.L., M.N., K.N., L.M.P., S.D.P., J.J.G.R., J.R., A.L.S., C.R.S., X.S., Z.Y. and J.R.Y. equally contributed to this work by sedimentological, micropaleontological, geochemical, magnestostratigraphic, physical property, and downhole logging analyses. All authors discussed the results and commented on the manuscript.</p>
</fn>
</fn-group>
</back>
<floats-group><fig id="f1"><label>Figure 1</label>
<caption><p>(<bold>A</bold>
) Location of the Maldives with main wind directions. (<bold>B</bold>
) Inner Sea with two rows of atolls. (<bold>C</bold>
) Satellite and multibeam imagery with position of IODP Expedition 359 sites. The seaway connecting the Inner Sea with the Indian Ocean formed through the demise of two N-S oriented continuous carbonate banks. Demise occurred in steps, as shown by the occurrence of drowned relict banks. The tear-drop shapes of the drowned atolls indicate the presence of a west-directed current flowing through the newly formed marine passage<xref ref-type="bibr" rid="b8">8</xref>
. White lines: position of seismic line shown in <xref ref-type="fig" rid="f2">Figs 2</xref>
and S1. Maps were produced using the program Esri ArcMap 10.1 (<ext-link ext-link-type="uri" xlink:href="http://www.esri.com">www.esri.com</ext-link>
). Bathymetric data in A and B were exported as Geotiffs from the application GeoMapApp 3.6.0 (<ext-link ext-link-type="uri" xlink:href="http://www.geomapapp.org">www.geomapapp.org</ext-link>
). In C, Worldwind satellite images (<ext-link ext-link-type="uri" xlink:href="http://worldwind.arc.nasa.gov/java">http://worldwind.arc.nasa.gov/java</ext-link>
) were merged with multibeam data acquired during the cruises M74/4 and SO236.</p>
</caption>
<graphic xlink:href="srep29838-f1"></graphic>
</fig>
<fig id="f2"><label>Figure 2</label>
<caption><title>Seismic line and sequence stratigraphic interpretation of the Inner Sea illustrates the abrupt onset of current-controlled drifts (yellow) overlying a package of sea-level controlled carbonate platform strata.</title>
<p>PS and DS denote the sequence boundaries defined in the platform and in the drift succession respectively. Three carbonate platform growth packages are differentiated: a lower to middle Miocene aggrading to prograding package, a dominantly aggrading middle Miocene package followed by a Middle Miocene prograding package. This seismic line provides a detail of a line cross-cutting the entire Inner Sea of the Maldives (<xref ref-type="supplementary-material" rid="S1">Figure S1</xref>
).</p>
</caption>
<graphic xlink:href="srep29838-f2"></graphic>
</fig>
<fig id="f3"><label>Figure 3</label>
<caption><p>(<bold>A</bold>
–<bold>D</bold>
) Age-depths plots for the sites used in this study. The age of the switch from sea-level controlled platform growth (blue) to the current-dominated sedimentation (yellow) varies in a narrow range of 13.1 to 12.8 Ma with an outlier of 12.2. Ma at Site U1468 Ma. 12.9 Ma is used herein as a median age value. The beginning and the end of platform growth during the Miocene Climate Optimum is dated at ~17.2 Ma and ~15.1 Ma, respectively. Planktonic foraminifer and calcareous nannoplankton datums are listed in Tables S1 and S2 (Methods, <xref ref-type="supplementary-material" rid="S1">Supplementary Materials</xref>
). Colors refer to the sediment packages differentiated in <xref ref-type="fig" rid="f2">Figs 2</xref>
and S1.</p>
</caption>
<graphic xlink:href="srep29838-f3"></graphic>
</fig>
<fig id="f4"><label>Figure 4</label>
<caption><p>(<bold>A</bold>
) Age of sequence boundaries; (<bold>B</bold>
) total gamma ray in downhole logs for Sites U1467 and U1468. For Site U1467, core measurements were used for the upper interval of the succession (no downhole logs available). (<bold>C</bold>
) Mn/Ca ratios at Sites U1466, U1468, and U1471. Black line shows a 3 point running average. (<bold>D</bold>
) Magnetic susceptibility from downhole logs at Sites U1467 and U1468. (<bold>E</bold>
) Stratigraphic breaks and changes, variations of the dust influx and of the OMZ and timing of SAM and Proto-Monsoon as proposed in this study. (<bold>F</bold>
) Deep sea oxygen isotope record<xref ref-type="bibr" rid="b9">9</xref>
, timing of the eastern Antarctic ice sheet (EAIS) expansion<xref ref-type="bibr" rid="b30">30</xref>
, timing of the middle Miocene climate optimum (MCO)<xref ref-type="bibr" rid="b31">31</xref>
, Mi-events 1–4<xref ref-type="bibr" rid="b12">12</xref>
, and restriction<xref ref-type="bibr" rid="b32">32</xref>
as well as final closure of the eastern Tethys seaway<xref ref-type="bibr" rid="b33">33</xref>
.</p>
</caption>
<graphic xlink:href="srep29838-f4"></graphic>
</fig>
<table-wrap position="float" id="t1"><label>Table 1</label>
<caption><title>Calcareous nannofossil events considered for Expedition 359.</title>
</caption>
<table frame="hsides" rules="groups" border="1"><colgroup><col align="left"></col>
<col align="center"></col>
</colgroup>
<thead valign="bottom"><tr><th align="left" valign="top" charoff="50"><bold>Event</bold>
</th>
<th align="center" valign="top" charoff="50"><bold>Age (Ma)</bold>
</th>
</tr>
</thead>
<tbody valign="top"><tr><td align="left" valign="top" charoff="50">FO <italic>Emiliania huxleyi</italic>
</td>
<td align="center" valign="top" charoff="50">0.29</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO <italic>Pseudoemiliania lacunosa</italic>
</td>
<td align="center" valign="top" charoff="50">0,44</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO <italic>G. lumina</italic>
/ small <italic>Gephyrocapsa</italic>
interval</td>
<td align="center" valign="top" charoff="50">1,24</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO <italic>Calcidiscus macintyrei</italic>
</td>
<td align="center" valign="top" charoff="50">1,6</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO <italic>Discoaster brouweri</italic>
</td>
<td align="center" valign="top" charoff="50">1,93</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO <italic>Discoaster pentaradiatus</italic>
</td>
<td align="center" valign="top" charoff="50">2,39</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO <italic>Sphenolithus abies</italic>
</td>
<td align="center" valign="top" charoff="50">3,54</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO <italic>Reticulofenestra pseudoumbilicus</italic>
</td>
<td align="center" valign="top" charoff="50">3,7</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO <italic>Discoaster quinqueramus</italic>
</td>
<td align="center" valign="top" charoff="50">5,59</td>
</tr>
<tr><td align="left" valign="top" charoff="50">FO <italic>Nicklithus amplificus</italic>
</td>
<td align="center" valign="top" charoff="50">6.91</td>
</tr>
<tr><td align="left" valign="top" charoff="50">FO <italic>Discoaster berggrenii/quinqueramus</italic>
</td>
<td align="center" valign="top" charoff="50">8,29</td>
</tr>
<tr><td align="left" valign="top" charoff="50">FO base small <italic>Reticulofenester</italic>
interval</td>
<td align="center" valign="top" charoff="50">8,79</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO <italic>Discoaster hamatus</italic>
</td>
<td align="center" valign="top" charoff="50">9,53</td>
</tr>
<tr><td align="left" valign="top" charoff="50">FO <italic>Discoaster hamatus</italic>
</td>
<td align="center" valign="top" charoff="50">10,55</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO <italic>Coronocycus nitescens</italic>
</td>
<td align="center" valign="top" charoff="50">11.9</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LCO <italic>Cyclicargolithus floridanus</italic>
</td>
<td align="center" valign="top" charoff="50">13.28</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO <italic>Sphenolithus heteromorphus</italic>
</td>
<td align="center" valign="top" charoff="50">13,53</td>
</tr>
<tr><td align="left" valign="top" charoff="50">FO <italic>Sphenolithus heteromorphus</italic>
</td>
<td align="center" valign="top" charoff="50">17,71</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO <italic>Sphenolithus belemnos</italic>
</td>
<td align="center" valign="top" charoff="50">17,95</td>
</tr>
<tr><td align="left" valign="top" charoff="50">FO <italic>Sphenolithus pseudoheteromorphus</italic>
</td>
<td align="center" valign="top" charoff="50">18.75</td>
</tr>
<tr><td align="left" valign="top" charoff="50">FO <italic>Sphenolithus belemnos</italic>
</td>
<td align="center" valign="top" charoff="50">19,03</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO <italic>Sphenolithus pseudoheteromorphus</italic>
</td>
<td align="center" valign="top" charoff="50">19.72</td>
</tr>
<tr><td align="left" valign="top" charoff="50">FO <italic>Sphenolithus delphix</italic>
</td>
<td align="center" valign="top" charoff="50">22.82</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO <italic>Sphenolithus delphix</italic>
</td>
<td align="center" valign="top" charoff="50">23,11</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO <italic>Sphenolithus ciperoensis</italic>
</td>
<td align="center" valign="top" charoff="50">24,04</td>
</tr>
</tbody>
</table>
<table-wrap-foot><fn id="t1-fn1"><p>Ages are based on ref. <xref ref-type="bibr" rid="b29">29</xref>
. FO: first occurrence; LO: last occurrence.</p>
</fn>
</table-wrap-foot>
</table-wrap>
<table-wrap position="float" id="t2"><label>Table 2</label>
<caption><title>Planktonic foraminifer datum events considered to reconstruct the chronology of Expedition 359 sediment cores.</title>
</caption>
<table frame="hsides" rules="groups" border="1"><colgroup><col align="left"></col>
<col align="left"></col>
<col align="center"></col>
<col align="center"></col>
</colgroup>
<thead valign="bottom"><tr><th colspan="2" align="left" valign="top" charoff="50"><bold>Datum</bold>
</th>
<th align="center" valign="top" charoff="50"><bold>Age (Ma)</bold>
</th>
<th align="center" valign="top" charoff="50"><bold>Zone/Subzone</bold>
</th>
</tr>
</thead>
<tbody valign="top"><tr><td align="left" valign="top" charoff="50">LO</td>
<td align="left" valign="top" charoff="50"><italic>Globigerinoides ruber</italic>
(pink)</td>
<td align="center" valign="top" charoff="50">0,12</td>
<td align="center" valign="top" charoff="50">PT1b</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO</td>
<td align="left" valign="top" charoff="50"><italic>Globorotalia tosaensis</italic>
</td>
<td align="center" valign="top" charoff="50">0,61</td>
<td align="center" valign="top" charoff="50">PT1b/PT1a</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO</td>
<td align="left" valign="top" charoff="50"><italic>Globigerinoides fistulosus</italic>
</td>
<td align="center" valign="top" charoff="50">1,88</td>
<td align="center" valign="top" charoff="50">PL6/PT1a</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO</td>
<td align="left" valign="top" charoff="50"><italic>Globorotalia limbata</italic>
</td>
<td align="center" valign="top" charoff="50">2,39</td>
<td align="center" valign="top" charoff="50">PL5</td>
</tr>
<tr><td align="left" valign="top" charoff="50">FO</td>
<td align="left" valign="top" charoff="50"><italic>Globigerinoides fistulosus</italic>
</td>
<td align="center" valign="top" charoff="50">3,33</td>
<td align="center" valign="top" charoff="50">PL5</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO</td>
<td align="left" valign="top" charoff="50"><italic>Dentoglobigerina altispira</italic>
</td>
<td align="center" valign="top" charoff="50">3,47</td>
<td align="center" valign="top" charoff="50">PL4/PL5</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO</td>
<td align="left" valign="top" charoff="50"><italic>Globorotalia margaritae</italic>
</td>
<td align="center" valign="top" charoff="50">3,85</td>
<td align="center" valign="top" charoff="50">PL2/PL3</td>
</tr>
<tr><td align="left" valign="top" charoff="50">FO</td>
<td align="left" valign="top" charoff="50"><italic>Sphaeroidinella dehiscens sensu lato</italic>
</td>
<td align="center" valign="top" charoff="50">5,53</td>
<td align="center" valign="top" charoff="50">PL1</td>
</tr>
<tr><td align="left" valign="top" charoff="50">FO</td>
<td align="left" valign="top" charoff="50"><italic>Globorotalia tumida</italic>
</td>
<td align="center" valign="top" charoff="50">5,57</td>
<td align="center" valign="top" charoff="50">M14/PL1</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO</td>
<td align="left" valign="top" charoff="50"><italic>Globoquadrina dehiscens</italic>
</td>
<td align="center" valign="top" charoff="50">5,92</td>
<td align="center" valign="top" charoff="50">M14</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO</td>
<td align="left" valign="top" charoff="50"><italic>Globorotalia lenguaensis</italic>
</td>
<td align="center" valign="top" charoff="50">6,14</td>
<td align="center" valign="top" charoff="50">M13b/M14</td>
</tr>
<tr><td align="left" valign="top" charoff="50">FO</td>
<td align="left" valign="top" charoff="50"><italic>Neogloboquadrina acostaensis</italic>
</td>
<td align="center" valign="top" charoff="50">9,83</td>
<td align="center" valign="top" charoff="50">M12/M13a</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO</td>
<td align="left" valign="top" charoff="50"><italic>Paragloborotalia mayeri</italic>
</td>
<td align="center" valign="top" charoff="50">10,46</td>
<td align="center" valign="top" charoff="50">M11/M12</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO</td>
<td align="left" valign="top" charoff="50"><italic>Fohsella fohsi</italic>
</td>
<td align="center" valign="top" charoff="50">11,79</td>
<td align="center" valign="top" charoff="50">M9b/M10</td>
</tr>
<tr><td align="left" valign="top" charoff="50">FO</td>
<td align="left" valign="top" charoff="50"><italic>Fohsella fohsi</italic>
</td>
<td align="center" valign="top" charoff="50">13,41</td>
<td align="center" valign="top" charoff="50">M9a/M8</td>
</tr>
<tr><td align="left" valign="top" charoff="50">FO</td>
<td align="left" valign="top" charoff="50"><italic>Orbulina suturalis</italic>
</td>
<td align="center" valign="top" charoff="50">15,1</td>
<td align="center" valign="top" charoff="50">M5b/M6</td>
</tr>
<tr><td align="left" valign="top" charoff="50">LO</td>
<td align="left" valign="top" charoff="50"><italic>Paragloborotalia kugleri</italic>
</td>
<td align="center" valign="top" charoff="50">21,12</td>
<td align="center" valign="top" charoff="50">M1b/M2</td>
</tr>
<tr><td align="left" valign="top" charoff="50">FO</td>
<td align="left" valign="top" charoff="50"><italic>Paragloborotalia kugleri</italic>
</td>
<td align="center" valign="top" charoff="50">22,96</td>
<td align="center" valign="top" charoff="50">Oligocene/M1a</td>
</tr>
</tbody>
</table>
<table-wrap-foot><fn id="t2-fn1"><p>Ages are based on ref. <xref ref-type="bibr" rid="b29">29</xref>
. FO: first occurrence; LO: last occurrence.</p>
</fn>
</table-wrap-foot>
</table-wrap>
</floats-group>
</pmc>
</record>
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