Microbial Sediments Occurring after the End-Devonian Extinction Event on the Hunan
详细信息
- 责任者：Hou Hongfei (Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Zhou Huailing
- 刊名：Acta Geologica Sinica
- 出版年：2011
- 卷期：85(1)
- 关键词：碳酸盐岩 ; carbonate rocks ; 微生物 ; microorganisms ; 湖南 ; Hunan Province
- 页码：p.145-156
- 图表：9 illus., 62 refs.
- 分类号：0803
- issnNo：ISSN0001-5717
- isbnNo：CN11-1951/P
摘要
A post-Hangenberg Event microbial sediments occur overlying disconformablely on the bauxite-clay beds or fenestral limestone of the topmost Devonian in central and southern Hunan Province. They are distributed restrictedly in carbonate platform and were formed during the beginning of transgression in earliest Carboniferous, corresponding to the foraminifera Unilocular Zone and the coral Interval Zone between Devonian Cystophrentis and Carboniferous Uralinia Zones. It is similar to those occurred after the latest Ordovician extinction event in western North America, and after the Permian-Triassic extinction in extensive area of the eastern Tethys and Panthalassa. Thus, the microbialite resurgence in association with low diversity ecosystems must be a common feature of post-extinction. The results would provide again a window into the patterns and processes of marine ecosystem restoration following the mass extinction.
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