Uplift of the central transantarctic mountains.
Identifieur interne : 000118 ( PubMed/Corpus ); précédent : 000117; suivant : 000119Uplift of the central transantarctic mountains.
Auteurs : Phil Wannamaker ; Graham Hill ; John Stodt ; Virginie Maris ; Yasuo Ogawa ; Kate Selway ; Goran Boren ; Edward Bertrand ; Daniel Uhlmann ; Bridget Ayling ; A Marie Green ; Daniel FeuchtSource :
- Nature communications [ 2041-1723 ] ; 2017.
Abstract
The Transantarctic Mountains (TAM) are the world's longest rift shoulder but the source of their high elevation is enigmatic. To discriminate the importance of mechanical vs. thermal sources of support, a 550 km-long transect of magnetotelluric geophysical soundings spanning the central TAM was acquired. These data reveal a lithosphere of high electrical resistivity to at least 150 km depth, implying a cold stable state well into the upper mantle. Here we find that the central TAM most likely are elevated by a non-thermal, flexural cantilever mechanism which is perhaps the most clearly expressed example anywhere. West Antarctica in this region exhibits a low resistivity, moderately hydrated asthenosphere, and concentrated extension (rift necking) near the central TAM range front but with negligible thermal encroachment into the TAM. Broader scale heat flow of east-central West Antarctica appears moderate, on the order of 60-70 mW m(-2), lower than that of the U.S. Great Basin.
DOI: 10.1038/s41467-017-01577-2
PubMed: 29150611
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Virginie" uniqKey="Maris V" first="Virginie" last="Maris">Virginie Maris</name><affiliation><nlm:affiliation>University of Utah/Energy & Geoscience Institute, Salt Lake City, 84108, UT, USA.</nlm:affiliation></affiliation></author><author><name sortKey="Ogawa, Yasuo" sort="Ogawa, Yasuo" uniqKey="Ogawa Y" first="Yasuo" last="Ogawa">Yasuo Ogawa</name><affiliation><nlm:affiliation>Tokyo Institute of Technology, Volcanic Fluid Research Center, Tokyo, 152-8550, Japan.</nlm:affiliation></affiliation></author><author><name sortKey="Selway, Kate" sort="Selway, Kate" uniqKey="Selway K" first="Kate" last="Selway">Kate Selway</name><affiliation><nlm:affiliation>Department of Earth and Planetary Sciences, Macquarie University, Sydney, 2109, NSW, Australia.</nlm:affiliation></affiliation></author><author><name sortKey="Boren, Goran" sort="Boren, Goran" uniqKey="Boren G" first="Goran" last="Boren">Goran Boren</name><affiliation><nlm:affiliation>Department of Geology & Geophysics, University of Adelaide, Adelaide, 5005, SA, Australia.</nlm:affiliation></affiliation></author><author><name sortKey="Bertrand, Edward" sort="Bertrand, Edward" uniqKey="Bertrand E" first="Edward" last="Bertrand">Edward Bertrand</name><affiliation><nlm:affiliation>GNS Science, Natural Hazards Division, Lower Hutt, 5011, New Zealand.</nlm:affiliation></affiliation></author><author><name sortKey="Uhlmann, Daniel" sort="Uhlmann, Daniel" uniqKey="Uhlmann D" first="Daniel" last="Uhlmann">Daniel Uhlmann</name><affiliation><nlm:affiliation>First Light Mountain Guides, Chamonix, 74400, France.</nlm:affiliation></affiliation></author><author><name sortKey="Ayling, Bridget" sort="Ayling, Bridget" uniqKey="Ayling B" first="Bridget" last="Ayling">Bridget Ayling</name><affiliation><nlm:affiliation>Great Basin Center for Geothermal Energy, University of Nevada, Reno, 89557, NV, USA.</nlm:affiliation></affiliation></author><author><name sortKey="Green, A Marie" sort="Green, A Marie" uniqKey="Green A" first="A Marie" last="Green">A Marie Green</name><affiliation><nlm:affiliation>Department of Geology & Geophysics, University of Utah, Salt Lake City, 84112, UT, USA.</nlm:affiliation></affiliation></author><author><name sortKey="Feucht, Daniel" sort="Feucht, Daniel" uniqKey="Feucht D" first="Daniel" last="Feucht">Daniel Feucht</name><affiliation><nlm:affiliation>Department of Geological Sciences, University of Colorado, Boulder, 80309, CO, USA.</nlm:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2017">2017</date><idno type="RBID">pubmed:29150611</idno><idno type="pmid">29150611</idno><idno type="doi">10.1038/s41467-017-01577-2</idno><idno type="wicri:Area/PubMed/Corpus">000118</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000118</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Uplift of the central transantarctic mountains.</title><author><name sortKey="Wannamaker, Phil" sort="Wannamaker, Phil" uniqKey="Wannamaker P" first="Phil" last="Wannamaker">Phil Wannamaker</name><affiliation><nlm:affiliation>University of Utah/Energy & Geoscience Institute, Salt Lake City, 84108, UT, USA. pewanna@egi.utah.edu.</nlm:affiliation></affiliation></author><author><name sortKey="Hill, Graham" sort="Hill, Graham" uniqKey="Hill G" first="Graham" last="Hill">Graham Hill</name><affiliation><nlm:affiliation>University of Canterbury, Gateway Antarctica, Christchurch, 8041, New Zealand.</nlm:affiliation></affiliation></author><author><name sortKey="Stodt, John" sort="Stodt, John" uniqKey="Stodt J" first="John" last="Stodt">John Stodt</name><affiliation><nlm:affiliation>Numeric Resources LLC, Salt Lake City, 84108, UT, USA.</nlm:affiliation></affiliation></author><author><name sortKey="Maris, Virginie" sort="Maris, Virginie" uniqKey="Maris V" first="Virginie" last="Maris">Virginie Maris</name><affiliation><nlm:affiliation>University of Utah/Energy & Geoscience Institute, Salt Lake City, 84108, UT, USA.</nlm:affiliation></affiliation></author><author><name sortKey="Ogawa, Yasuo" sort="Ogawa, Yasuo" uniqKey="Ogawa Y" first="Yasuo" last="Ogawa">Yasuo Ogawa</name><affiliation><nlm:affiliation>Tokyo Institute of Technology, Volcanic Fluid Research Center, Tokyo, 152-8550, Japan.</nlm:affiliation></affiliation></author><author><name sortKey="Selway, Kate" sort="Selway, Kate" uniqKey="Selway K" first="Kate" last="Selway">Kate Selway</name><affiliation><nlm:affiliation>Department of Earth and Planetary Sciences, Macquarie University, Sydney, 2109, NSW, Australia.</nlm:affiliation></affiliation></author><author><name sortKey="Boren, Goran" sort="Boren, Goran" uniqKey="Boren G" first="Goran" last="Boren">Goran Boren</name><affiliation><nlm:affiliation>Department of Geology & Geophysics, University of Adelaide, Adelaide, 5005, SA, Australia.</nlm:affiliation></affiliation></author><author><name sortKey="Bertrand, Edward" sort="Bertrand, Edward" uniqKey="Bertrand E" first="Edward" last="Bertrand">Edward Bertrand</name><affiliation><nlm:affiliation>GNS Science, Natural Hazards Division, Lower Hutt, 5011, New Zealand.</nlm:affiliation></affiliation></author><author><name sortKey="Uhlmann, Daniel" sort="Uhlmann, Daniel" uniqKey="Uhlmann D" first="Daniel" last="Uhlmann">Daniel Uhlmann</name><affiliation><nlm:affiliation>First Light Mountain Guides, Chamonix, 74400, France.</nlm:affiliation></affiliation></author><author><name sortKey="Ayling, Bridget" sort="Ayling, Bridget" uniqKey="Ayling B" first="Bridget" last="Ayling">Bridget Ayling</name><affiliation><nlm:affiliation>Great Basin Center for Geothermal Energy, University of Nevada, Reno, 89557, NV, USA.</nlm:affiliation></affiliation></author><author><name sortKey="Green, A Marie" sort="Green, A Marie" uniqKey="Green A" first="A Marie" last="Green">A Marie Green</name><affiliation><nlm:affiliation>Department of Geology & Geophysics, University of Utah, Salt Lake City, 84112, UT, USA.</nlm:affiliation></affiliation></author><author><name sortKey="Feucht, Daniel" sort="Feucht, Daniel" uniqKey="Feucht D" first="Daniel" last="Feucht">Daniel Feucht</name><affiliation><nlm:affiliation>Department of Geological Sciences, University of Colorado, Boulder, 80309, CO, USA.</nlm:affiliation></affiliation></author></analytic><series><title level="j">Nature communications</title><idno type="eISSN">2041-1723</idno><imprint><date when="2017" type="published">2017</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The Transantarctic Mountains (TAM) are the world's longest rift shoulder but the source of their high elevation is enigmatic. To discriminate the importance of mechanical vs. thermal sources of support, a 550 km-long transect of magnetotelluric geophysical soundings spanning the central TAM was acquired. These data reveal a lithosphere of high electrical resistivity to at least 150 km depth, implying a cold stable state well into the upper mantle. Here we find that the central TAM most likely are elevated by a non-thermal, flexural cantilever mechanism which is perhaps the most clearly expressed example anywhere. West Antarctica in this region exhibits a low resistivity, moderately hydrated asthenosphere, and concentrated extension (rift necking) near the central TAM range front but with negligible thermal encroachment into the TAM. Broader scale heat flow of east-central West Antarctica appears moderate, on the order of 60-70 mW m(-2), lower than that of the U.S. Great Basin.</div></front></TEI><pubmed><MedlineCitation Status="In-Data-Review" Owner="NLM"><PMID Version="1">29150611</PMID><DateCreated><Year>2017</Year><Month>11</Month><Day>18</Day></DateCreated><DateRevised><Year>2017</Year><Month>11</Month><Day>18</Day></DateRevised><Article PubModel="Electronic"><Journal><ISSN IssnType="Electronic">2041-1723</ISSN><JournalIssue CitedMedium="Internet"><Volume>8</Volume><Issue>1</Issue><PubDate><Year>2017</Year><Month>Nov</Month><Day>17</Day></PubDate></JournalIssue><Title>Nature communications</Title><ISOAbbreviation>Nat Commun</ISOAbbreviation></Journal><ArticleTitle>Uplift of the central transantarctic mountains.</ArticleTitle><Pagination><MedlinePgn>1588</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1038/s41467-017-01577-2</ELocationID><Abstract><AbstractText>The Transantarctic Mountains (TAM) are the world's longest rift shoulder but the source of their high elevation is enigmatic. To discriminate the importance of mechanical vs. thermal sources of support, a 550 km-long transect of magnetotelluric geophysical soundings spanning the central TAM was acquired. These data reveal a lithosphere of high electrical resistivity to at least 150 km depth, implying a cold stable state well into the upper mantle. Here we find that the central TAM most likely are elevated by a non-thermal, flexural cantilever mechanism which is perhaps the most clearly expressed example anywhere. West Antarctica in this region exhibits a low resistivity, moderately hydrated asthenosphere, and concentrated extension (rift necking) near the central TAM range front but with negligible thermal encroachment into the TAM. Broader scale heat flow of east-central West Antarctica appears moderate, on the order of 60-70 mW m(-2), lower than that of the U.S. Great Basin.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Wannamaker</LastName><ForeName>Phil</ForeName><Initials>P</Initials><Identifier Source="ORCID">http://orcid.org/0000-0001-5744-6474</Identifier><AffiliationInfo><Affiliation>University of Utah/Energy & Geoscience Institute, Salt Lake City, 84108, UT, USA. pewanna@egi.utah.edu.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Hill</LastName><ForeName>Graham</ForeName><Initials>G</Initials><AffiliationInfo><Affiliation>University of Canterbury, Gateway Antarctica, Christchurch, 8041, New Zealand.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Antarctica Scientific Ltd, Wellington, 6011, New Zealand.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Formerly at GNS Science, Natural Hazards Division, Lower Hutt, 5011, New Zealand.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Stodt</LastName><ForeName>John</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>Numeric Resources LLC, Salt Lake City, 84108, UT, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Maris</LastName><ForeName>Virginie</ForeName><Initials>V</Initials><AffiliationInfo><Affiliation>University of Utah/Energy & Geoscience Institute, Salt Lake City, 84108, UT, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Ogawa</LastName><ForeName>Yasuo</ForeName><Initials>Y</Initials><Identifier Source="ORCID">http://orcid.org/0000-0002-6663-401X</Identifier><AffiliationInfo><Affiliation>Tokyo Institute of Technology, Volcanic Fluid Research Center, Tokyo, 152-8550, Japan.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Selway</LastName><ForeName>Kate</ForeName><Initials>K</Initials><AffiliationInfo><Affiliation>Department of Earth and Planetary Sciences, Macquarie University, Sydney, 2109, NSW, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Boren</LastName><ForeName>Goran</ForeName><Initials>G</Initials><AffiliationInfo><Affiliation>Department of Geology & Geophysics, University of Adelaide, Adelaide, 5005, SA, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Bertrand</LastName><ForeName>Edward</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>GNS Science, Natural Hazards Division, Lower Hutt, 5011, New Zealand.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Uhlmann</LastName><ForeName>Daniel</ForeName><Initials>D</Initials><AffiliationInfo><Affiliation>First Light Mountain Guides, Chamonix, 74400, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Ayling</LastName><ForeName>Bridget</ForeName><Initials>B</Initials><AffiliationInfo><Affiliation>Great Basin Center for Geothermal Energy, University of Nevada, Reno, 89557, NV, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Green</LastName><ForeName>A Marie</ForeName><Initials>AM</Initials><AffiliationInfo><Affiliation>Department of Geology & Geophysics, University of Utah, Salt Lake City, 84112, UT, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Feucht</LastName><ForeName>Daniel</ForeName><Initials>D</Initials><AffiliationInfo><Affiliation>Department of Geological Sciences, University of Colorado, Boulder, 80309, CO, USA.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2017</Year><Month>11</Month><Day>17</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Nat Commun</MedlineTA><NlmUniqueID>101528555</NlmUniqueID><ISSNLinking>2041-1723</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2017</Year><Month>03</Month><Day>01</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2017</Year><Month>10</Month><Day>02</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2017</Year><Month>11</Month><Day>19</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2017</Year><Month>11</Month><Day>19</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2017</Year><Month>11</Month><Day>19</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>epublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">29150611</ArticleId><ArticleId IdType="doi">10.1038/s41467-017-01577-2</ArticleId><ArticleId IdType="pii">10.1038/s41467-017-01577-2</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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