Pristine Early Eocene Wood Buried Deeply in Kimberlite from Northern Canada
Identifieur interne : 000357 ( Main/Exploration ); précédent : 000356; suivant : 000358Pristine Early Eocene Wood Buried Deeply in Kimberlite from Northern Canada
Auteurs : Alexander P. Wolfe [Canada] ; Adam Z. Csank [États-Unis] ; Alberto V. Reyes [États-Unis] ; Ryan C. Mckellar [Canada] ; Ralf Tappert [Autriche] ; Karlis Muehlenbachs [Canada]Source :
- PLoS ONE [ 1932-6203 ] ; 2012.
Abstract
We report exceptional preservation of fossil wood buried deeply in a kimberlite pipe that intruded northwestern Canada’s Slave Province 53.3±0.6 million years ago (Ma), revealed during excavation of diamond source rock. The wood originated from forest surrounding the eruption zone and collapsed into the diatreme before resettling in volcaniclastic kimberlite to depths >300 m, where it was mummified in a sterile environment. Anatomy of the unpermineralized wood permits conclusive identification to the genus
Url:
DOI: 10.1371/journal.pone.0045537
PubMed: 23029080
PubMed Central: 3446892
Affiliations:
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Wolfe</name><affiliation wicri:level="1"><nlm:aff id="aff1"><addr-line>Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Canada</addr-line></nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton</wicri:regionArea><wicri:noRegion>Edmonton</wicri:noRegion></affiliation></author><author><name sortKey="Csank, Adam Z" sort="Csank, Adam Z" uniqKey="Csank A" first="Adam Z." last="Csank">Adam Z. Csank</name><affiliation wicri:level="2"><nlm:aff id="aff2"><addr-line>Environment and Natural Resources Institute, University of Alaska, Anchorage, Alaska, United States of America</addr-line></nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Environment and Natural Resources Institute, University of Alaska, Anchorage, Alaska</wicri:regionArea><placeName><region type="state">Alaska</region></placeName></affiliation></author><author><name sortKey="Reyes, Alberto V" sort="Reyes, Alberto V" uniqKey="Reyes A" first="Alberto V." last="Reyes">Alberto V. Reyes</name><affiliation wicri:level="2"><nlm:aff id="aff3"><addr-line>Department of Geoscience, University of Wisconsin, Madison, Wisconsin, United States of America</addr-line></nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Geoscience, University of Wisconsin, Madison, Wisconsin</wicri:regionArea><placeName><region type="state">Wisconsin</region></placeName></affiliation></author><author><name sortKey="Mckellar, Ryan C" sort="Mckellar, Ryan C" uniqKey="Mckellar R" first="Ryan C." last="Mckellar">Ryan C. Mckellar</name><affiliation wicri:level="1"><nlm:aff id="aff1"><addr-line>Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Canada</addr-line></nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton</wicri:regionArea><wicri:noRegion>Edmonton</wicri:noRegion></affiliation></author><author><name sortKey="Tappert, Ralf" sort="Tappert, Ralf" uniqKey="Tappert R" first="Ralf" last="Tappert">Ralf Tappert</name><affiliation wicri:level="1"><nlm:aff id="aff4"><addr-line>Institute of Mineralogy and Petrography, University of Innsbruck, Innsbruck, Austria</addr-line></nlm:aff><country xml:lang="fr">Autriche</country><wicri:regionArea>Institute of Mineralogy and Petrography, University of Innsbruck, Innsbruck</wicri:regionArea><wicri:noRegion>Innsbruck</wicri:noRegion></affiliation></author><author><name sortKey="Muehlenbachs, Karlis" sort="Muehlenbachs, Karlis" uniqKey="Muehlenbachs K" first="Karlis" last="Muehlenbachs">Karlis Muehlenbachs</name><affiliation wicri:level="1"><nlm:aff id="aff1"><addr-line>Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Canada</addr-line></nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton</wicri:regionArea><wicri:noRegion>Edmonton</wicri:noRegion></affiliation></author></analytic><series><title level="j">PLoS ONE</title><idno type="eISSN">1932-6203</idno><imprint><date when="2012">2012</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>We report exceptional preservation of fossil wood buried deeply in a kimberlite pipe that intruded northwestern Canada’s Slave Province 53.3±0.6 million years ago (Ma), revealed during excavation of diamond source rock. The wood originated from forest surrounding the eruption zone and collapsed into the diatreme before resettling in volcaniclastic kimberlite to depths >300 m, where it was mummified in a sterile environment. Anatomy of the unpermineralized wood permits conclusive identification to the genus <italic>Metasequoia</italic> (Cupressaceae). The wood yields genuine cellulose and occluded amber, both of which have been characterized spectroscopically and isotopically. From cellulose δ<sup>18</sup>O and δ<sup>2</sup>H measurements, we infer that Early Eocene paleoclimates in the western Canadian subarctic were 12–17°C warmer and four times wetter than present. Canadian kimberlites offer Lagerstätte-quality preservation of wood from a region with limited alternate sources of paleobotanical information.</p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Wilson, L" uniqKey="Wilson L">L Wilson</name></author><author><name sortKey="Head, Jw" uniqKey="Head J">JW Head</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Edwards, B" uniqKey="Edwards B">B Edwards</name></author><author><name sortKey="Howkins, B" uniqKey="Howkins B">B Howkins</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Smith, Rmh" uniqKey="Smith R">RMH Smith</name></author></analytic></biblStruct><biblStruct></biblStruct><biblStruct><analytic><author><name sortKey="Cookenboo, Ho" uniqKey="Cookenboo H">HO Cookenboo</name></author><author><name sortKey="Orchard, Mj" uniqKey="Orchard M">MJ Orchard</name></author><author><name sortKey="Daoud, Dk" uniqKey="Daoud D">DK 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Wolfe</name></noRegion><name sortKey="Mckellar, Ryan C" sort="Mckellar, Ryan C" uniqKey="Mckellar R" first="Ryan C." last="Mckellar">Ryan C. Mckellar</name><name sortKey="Muehlenbachs, Karlis" sort="Muehlenbachs, Karlis" uniqKey="Muehlenbachs K" first="Karlis" last="Muehlenbachs">Karlis Muehlenbachs</name></country><country name="États-Unis"><region name="Alaska"><name sortKey="Csank, Adam Z" sort="Csank, Adam Z" uniqKey="Csank A" first="Adam Z." last="Csank">Adam Z. Csank</name></region><name sortKey="Reyes, Alberto V" sort="Reyes, Alberto V" uniqKey="Reyes A" first="Alberto V." last="Reyes">Alberto V. Reyes</name></country><country name="Autriche"><noRegion><name sortKey="Tappert, Ralf" sort="Tappert, Ralf" uniqKey="Tappert R" first="Ralf" last="Tappert">Ralf Tappert</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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HfdIndexSelect -h $EXPLOR_AREA/Data/Main/Exploration/RBID.i -Sk "pubmed:23029080" \
| HfdSelect -Kh $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd \
| NlmPubMed2Wicri -a CobaltMaghrebV1
| This area was generated with Dilib version V0.6.32. |  |