Calcification and Silicification: Fossilization Potential of Cyanobacteria from Stromatolites of Niuafo‘ou's Caldera Lakes (Tonga) and Implications for the Early Fossil Record
Identifieur interne : 000305 ( Pmc/Corpus ); précédent : 000304; suivant : 000306Calcification and Silicification: Fossilization Potential of Cyanobacteria from Stromatolites of Niuafo‘ou's Caldera Lakes (Tonga) and Implications for the Early Fossil Record
Auteurs : Barbara Kremer ; J Zef Kazmierczak ; Maja Łukomska-Kowalczyk ; Stephan KempeSource :
- Astrobiology [ 1531-1074 ] ; 2012.
Abstract
Calcification and silicification processes of cyanobacterial mats that form stromatolites in two caldera lakes of Niuafo‘ou Island (Vai Lahi and Vai Si‘i) were evaluated, and their importance as analogues for interpreting the early fossil record are discussed. It has been shown that the potential for morphological preservation of Niuafo‘ou cyanobacteria is highly dependent on the timing and type of mineral phase involved in the fossilization process. Four main modes of mineralization of cyanobacteria organic parts have been recognized: (i) primary early
Url:
DOI: 10.1089/ast.2011.0742
PubMed: 22794297
PubMed Central: 3397119
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PMC:3397119Le document en format XML
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<author><name sortKey="Kremer, Barbara" sort="Kremer, Barbara" uniqKey="Kremer B" first="Barbara" last="Kremer">Barbara Kremer</name>
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<author><name sortKey="Kazmierczak, J Zef" sort="Kazmierczak, J Zef" uniqKey="Kazmierczak J" first="J Zef" last="Kazmierczak">J Zef Kazmierczak</name>
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<author><name sortKey="Lukomska Kowalczyk, Maja" sort="Lukomska Kowalczyk, Maja" uniqKey="Lukomska Kowalczyk M" first="Maja" last="Łukomska-Kowalczyk">Maja Łukomska-Kowalczyk</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Calcification and Silicification: Fossilization Potential of Cyanobacteria from Stromatolites of Niuafo‘ou's Caldera Lakes (Tonga) and Implications for the Early Fossil Record</title>
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<author><name sortKey="Kazmierczak, J Zef" sort="Kazmierczak, J Zef" uniqKey="Kazmierczak J" first="J Zef" last="Kazmierczak">J Zef Kazmierczak</name>
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<author><name sortKey="Lukomska Kowalczyk, Maja" sort="Lukomska Kowalczyk, Maja" uniqKey="Lukomska Kowalczyk M" first="Maja" last="Łukomska-Kowalczyk">Maja Łukomska-Kowalczyk</name>
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<author><name sortKey="Kempe, Stephan" sort="Kempe, Stephan" uniqKey="Kempe S" first="Stephan" last="Kempe">Stephan Kempe</name>
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<series><title level="j">Astrobiology</title>
<idno type="ISSN">1531-1074</idno>
<idno type="eISSN">1557-8070</idno>
<imprint><date when="2012">2012</date>
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<front><div type="abstract" xml:lang="en"><title>Abstract</title>
<p>Calcification and silicification processes of cyanobacterial mats that form stromatolites in two caldera lakes of Niuafo‘ou Island (Vai Lahi and Vai Si‘i) were evaluated, and their importance as analogues for interpreting the early fossil record are discussed. It has been shown that the potential for morphological preservation of Niuafo‘ou cyanobacteria is highly dependent on the timing and type of mineral phase involved in the fossilization process. Four main modes of mineralization of cyanobacteria organic parts have been recognized: (i) primary early <italic>postmortem</italic>
calcification by aragonite nanograins that transform quickly into larger needle-like crystals and almost totally destroy the cellular structures, (ii) primary early <italic>postmortem</italic>
silicification of almost intact cyanobacterial cells that leave a record of spectacularly well-preserved cellular structures, (iii) replacement by silica of primary aragonite that has already recrystallized and obliterated the cellular structures, (iv) occasional replacement of primary aragonite precipitated in the mucopolysaccharide sheaths and extracellular polymeric substances by Al-Mg-Fe silicates. These observations suggest that the extremely scarce earliest fossil record may, in part, be the result of (a) secondary replacement by silica of primary carbonate minerals (aragonite, calcite, siderite), which, due to recrystallization, had already annihilated the cellular morphology of the mineralized microbiota or (b) relatively late primary silicification of already highly degraded and no longer morphologically identifiable microbial remains. Key Words: Stromatolites—Cyanobacteria—Calcification—Silicification—Niuafo‘ou (Tonga)—Archean. Astrobiology 12, 535–548.</p>
</div>
</front>
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<pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Astrobiology</journal-id>
<journal-id journal-id-type="iso-abbrev">Astrobiology</journal-id>
<journal-id journal-id-type="publisher-id">ast</journal-id>
<journal-title-group><journal-title>Astrobiology</journal-title>
</journal-title-group>
<issn pub-type="ppub">1531-1074</issn>
<issn pub-type="epub">1557-8070</issn>
<publisher><publisher-name>Mary Ann Liebert, Inc.</publisher-name>
<publisher-loc>140 Huguenot Street, 3rd FloorNew Rochelle, NY 10801USA</publisher-loc>
</publisher>
</journal-meta>
<article-meta><article-id pub-id-type="pmid">22794297</article-id>
<article-id pub-id-type="pmc">3397119</article-id>
<article-id pub-id-type="publisher-id">10.1089/ast.2011.0742</article-id>
<article-id pub-id-type="doi">10.1089/ast.2011.0742</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Research Articles</subject>
</subj-group>
</article-categories>
<title-group><article-title>Calcification and Silicification: Fossilization Potential of Cyanobacteria from Stromatolites of Niuafo‘ou's Caldera Lakes (Tonga) and Implications for the Early Fossil Record</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" corresp="yes"><name><surname>Kremer</surname>
<given-names>Barbara</given-names>
</name>
<xref ref-type="aff" rid="aff1"><sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Kazmierczak</surname>
<given-names>Józef</given-names>
</name>
<xref ref-type="aff" rid="aff1"><sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Łukomska-Kowalczyk</surname>
<given-names>Maja</given-names>
</name>
<xref ref-type="aff" rid="aff2"><sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Kempe</surname>
<given-names>Stephan</given-names>
</name>
<xref ref-type="aff" rid="aff3"><sup>3</sup>
</xref>
</contrib>
<aff id="aff1"><label><sup>1</sup>
</label>
Institute of Paleobiology,<institution>Polish Academy of Sciences</institution>
, Warsaw,<country>Poland</country>
.</aff>
<aff id="aff2"><label><sup>2</sup>
</label>
Faculty of Biology,<institution>Warsaw University</institution>
, Warsaw,<country>Poland</country>
.</aff>
<aff id="aff3"><label><sup>3</sup>
</label>
Institut für Angewandte Geowissenschaften,<institution>Technische Universität Darmstadt</institution>
, Darmstadt,<country>Germany</country>
.</aff>
</contrib-group>
<author-notes><corresp>Address correspondence to: <italic>Barbara Kremer, Institute of Paleobiology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warszawa, Poland. E-mail:</italic>
<email xlink:href="mailto:kremer@twarda.pan.pl">kremer@twarda.pan.pl</email>
</corresp>
</author-notes>
<pub-date pub-type="ppub"><month>6</month>
<year>2012</year>
<pmc-comment>string-date: June 2012</pmc-comment>
</pub-date>
<volume>12</volume>
<issue>6</issue>
<fpage>535</fpage>
<lpage>548</lpage>
<history><date date-type="received"><day>05</day>
<month>10</month>
<year>2011</year>
<pmc-comment>string-date: Submitted 5 October 2011</pmc-comment>
</date>
<date date-type="accepted"><day>07</day>
<month>3</month>
<year>2012</year>
<pmc-comment>string-date: Accepted 7 March 2012</pmc-comment>
</date>
</history>
<permissions><copyright-statement>Copyright 2012, Mary Ann Liebert, Inc.</copyright-statement>
<copyright-year>2012</copyright-year>
</permissions>
<self-uri xlink:type="simple" xlink:href="ast.2011.0742.pdf"></self-uri>
<abstract><title>Abstract</title>
<p>Calcification and silicification processes of cyanobacterial mats that form stromatolites in two caldera lakes of Niuafo‘ou Island (Vai Lahi and Vai Si‘i) were evaluated, and their importance as analogues for interpreting the early fossil record are discussed. It has been shown that the potential for morphological preservation of Niuafo‘ou cyanobacteria is highly dependent on the timing and type of mineral phase involved in the fossilization process. Four main modes of mineralization of cyanobacteria organic parts have been recognized: (i) primary early <italic>postmortem</italic>
calcification by aragonite nanograins that transform quickly into larger needle-like crystals and almost totally destroy the cellular structures, (ii) primary early <italic>postmortem</italic>
silicification of almost intact cyanobacterial cells that leave a record of spectacularly well-preserved cellular structures, (iii) replacement by silica of primary aragonite that has already recrystallized and obliterated the cellular structures, (iv) occasional replacement of primary aragonite precipitated in the mucopolysaccharide sheaths and extracellular polymeric substances by Al-Mg-Fe silicates. These observations suggest that the extremely scarce earliest fossil record may, in part, be the result of (a) secondary replacement by silica of primary carbonate minerals (aragonite, calcite, siderite), which, due to recrystallization, had already annihilated the cellular morphology of the mineralized microbiota or (b) relatively late primary silicification of already highly degraded and no longer morphologically identifiable microbial remains. Key Words: Stromatolites—Cyanobacteria—Calcification—Silicification—Niuafo‘ou (Tonga)—Archean. Astrobiology 12, 535–548.</p>
</abstract>
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