globalchange  > 过去全球变化的重建
DOI: 10.1371/journal.pone.0099438
论文题名:
The 2.1 Ga Old Francevillian Biota: Biogenicity, Taphonomy and Biodiversity
作者: Abderrazak El Albani; Stefan Bengtson; Donald E. Canfield; Armelle Riboulleau; Claire Rollion Bard; Roberto Macchiarelli; Lauriss Ngombi Pemba; Emma Hammarlund; Alain Meunier; Idalina Moubiya Mouele; Karim Benzerara; Sylvain Bernard; Philippe Boulvais; Marc Chaussidon; Christian Cesari; Claude Fontaine; Ernest Chi-Fru; Juan Manuel Garcia Ruiz; François Gauthier-Lafaye; Arnaud Mazurier; Anne Catherine Pierson-Wickmann; Olivier Rouxel; Alain Trentesaux; Marco Vecoli; Gerard J. M. Versteegh; Lee White; Martin Whitehouse; Andrey Bekker
刊名: PLOS ONE
ISSN: 1932-6203
出版年: 2014
发表日期: 2014-6-25
卷: 9, 期:6
语种: 英语
英文关键词: Pyritization ; Shale ; Fossils ; Sediment ; Paleobiology ; Crystals ; Paleoecology ; Paleoenvironments
英文摘要: The Paleoproterozoic Era witnessed crucial steps in the evolution of Earth's surface environments following the first appreciable rise of free atmospheric oxygen concentrations ∼2.3 to 2.1 Ga ago, and concomitant shallow ocean oxygenation. While most sedimentary successions deposited during this time interval have experienced thermal overprinting from burial diagenesis and metamorphism, the ca. 2.1 Ga black shales of the Francevillian B Formation (FB2) cropping out in southeastern Gabon have not. The Francevillian Formation contains centimeter-sized structures interpreted as organized and spatially discrete populations of colonial organisms living in an oxygenated marine ecosystem. Here, new material from the FB2 black shales is presented and analyzed to further explore its biogenicity and taphonomy. Our extended record comprises variably sized, shaped, and structured pyritized macrofossils of lobate, elongated, and rod-shaped morphologies as well as abundant non-pyritized disk-shaped macrofossils and organic-walled acritarchs. Combined microtomography, geochemistry, and sedimentary analysis suggest a biota fossilized during early diagenesis. The emergence of this biota follows a rise in atmospheric oxygen, which is consistent with the idea that surface oxygenation allowed the evolution and ecological expansion of complex megascopic life.
URL: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0099438&type=printable
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/17782
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

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作者单位: Institut IC2MP, UMR 7285 CNRS-INSU, Université de Poitiers, Poitiers, France;Department of Palaeozoology and Nordic Center for Earth Evolution, Swedish Museum of Natural History, Stockholm, Sweden;Nordic Center for Earth Evolution, Odense M, Denmark;Laboratoire Géosystèmes, UMR 8217 CNRS, Université Lille 1, Villeneuve d'Ascq, France;Centre de Recherches Pétrographiques et Géochimiques, CNRS UMR 7358, Vandoeuvre-lès-Nancy, France;Département Géosciences, Université de Poitiers, Poitiers, France;Département de Préhistoire, UMR 7194 CNRS, Muséum National d'Histoire Naturelle, Paris, France;Institut IC2MP, UMR 7285 CNRS-INSU, Université de Poitiers, Poitiers, France;Department of Palaeozoology and Nordic Center for Earth Evolution, Swedish Museum of Natural History, Stockholm, Sweden;Nordic Center for Earth Evolution, Odense M, Denmark;Institut IC2MP, UMR 7285 CNRS-INSU, Université de Poitiers, Poitiers, France;Institut IC2MP, UMR 7285 CNRS-INSU, Université de Poitiers, Poitiers, France;IMPMC, Sorbonne Universités, UMR 7590, MNHN - UPMC - IRD UMR 206, Paris, France;IMPMC, Sorbonne Universités, UMR 7590, MNHN - UPMC - IRD UMR 206, Paris, France;Département Géosciences, UMR 6118, Université de Rennes, Rennes, France;Centre de Recherches Pétrographiques et Géochimiques, CNRS UMR 7358, Vandoeuvre-lès-Nancy, France;Laboratoire Géosystèmes, UMR 8217 CNRS, Université Lille 1, Villeneuve d'Ascq, France;Institut IC2MP, UMR 7285 CNRS-INSU, Université de Poitiers, Poitiers, France;Stockholm University, Department of Geological Sciences, SE-106 91, Stockhom, Sweden;Instituto Andaluz de Ciencias de la Tierra, CSIC-Universidad de Granada, 18100 Armilla, Granada, Spain;Laboratoire d'Hydrologie et de Géochimie de Strasbourg, UMR 7517 CNRS, Strasbourg, France;Société Etudes Recherches Matériaux, CRI Biopole, Poitiers, France;Département Géosciences, UMR 6118, Université de Rennes, Rennes, France;IFREMER, Department of Physical Resources and Deep-Sea Ecosystems Technopôle Brest-Iroise, Plouzané, France;Laboratoire Géosystèmes, UMR 8217 CNRS, Université Lille 1, Villeneuve d'Ascq, France;Laboratoire Géosystèmes, UMR 8217 CNRS, Université Lille 1, Villeneuve d'Ascq, France;Marum Center for Marine Environmental Sciences, Bremen, Germany;Agence Nationale des Parcs Nationaux, BP. 20379, Libreville, Gabon;Laboratory for Isotope Geology and Nordic Center for Earth Evolution, Swedish Museum of Natural History, Stockholm, Sweden;Department of Earth Sciences, University of California, Riverside, Riverside, California, United States of America

Recommended Citation:
Abderrazak El Albani,Stefan Bengtson,Donald E. Canfield,et al. The 2.1 Ga Old Francevillian Biota: Biogenicity, Taphonomy and Biodiversity[J]. PLOS ONE,2014-01-01,9(6)
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