globalchange  > 影响、适应和脆弱性
DOI: 10.1007/s00531-014-1125-3
Scopus记录号: 2-s2.0-84929709728
论文题名:
Geochemistry of post-extinction microbialites as a powerful tool to assess the oxygenation of shallow marine water in the immediate aftermath of the end-Permian mass extinction
作者: Collin P.Y.; Kershaw S.; Tribovillard N.; Forel M.B.; Crasquin S.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2015
卷: 104, 期:4
起始页码: 1025
结束页码: 1037
语种: 英语
英文关键词: Microbialite ; Oxygenation ; Permian–Triassic mass extinction ; Rare earth elements ; Shallow marine water ; Trace elements
Scopus关键词: mass extinction ; microbialite ; oxygenation ; Permian ; rare earth element ; sediment chemistry ; shallow water ; trace element ; Triassic ; Foraminifera ; Ostracoda
英文摘要: Rapid and profound changes in earth surface environments and biota across the Permian–Triassic boundary are well known and relate to the end-Permian mass extinction event. This major crisis is demonstrated by abrupt facies change and the development of microbialite carbonates on the shallow marine shelves around Palaeo-Tethys and western Panthalassa. Microbialites have been described from a range of sites in end-Permian and basal Triassic marine sedimentary rocks, immediately following the end-Permian mass extinction. Here, we present geochemical data primarily focused on microbialites. Our geochemical analysis shows that U, V, Mo and REE (Ce anomaly) may be used as robust redox proxies so that the microbialites record the chemistry of the ancient ambient sea water. Among the three trace metals reputed to be reliable redox proxies, one (V) is correlated here with terrigenous supply, the other two elements (U and Mo) do not show any significant authigenic enrichment, thereby indicating that oxic conditions prevailed during the growth of microbialites. REE profiles show a prominent negative Ce anomaly, also showing that the shallow marine waters were oxic. Our geochemical data are consistent with the presence of some benthic organisms (ostracods, scattered microgastropods, microbrachiopods and foraminifers) in shallow marine waters that survived the mass extinction event. © 2014, Springer-Verlag Berlin Heidelberg.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929709728&doi=10.1007%2fs00531-014-1125-3&partnerID=40&md5=a338a9061d9f69e893a8cc5fa4d69f22
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70223
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: CNRS UMR 6282 Biogéosciences, Université de Bourgogne, 6 Bd Gabriel, Dijon, France; Institute for the Environment, Halsbury Building, Brunel University, Kingston Lane, Uxbridge, Middlesex, United Kingdom; CNRS UMR 8217 Géosystèmes, Université Lille 1, Bâtiment SN5, Villeneuve d’Ascq Cedex, France; CR2P, MNHN-CNRS-Université Pierre and Marie Curie - Paris 06, 4 Place Jussieu, Case 104, Paris, France; China University of Geosciences (Wuhan), 388 Lumo Road, Wuhan, Hubei Province, China

Recommended Citation:
Collin P.Y.,Kershaw S.,Tribovillard N.,et al. Geochemistry of post-extinction microbialites as a powerful tool to assess the oxygenation of shallow marine water in the immediate aftermath of the end-Permian mass extinction[J]. International Journal of Earth Sciences,2015-01-01,104(4)
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