globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2015.11.032
论文题名:
Depositional conditions and revised age of the Permo-Triassic microbialites at Gaohua section, Cili County (Hunan Province, South China)
作者: Wang L.; Wignall P.B.; Wang Y.; Jiang H.; Sun Y.; Li G.; Yuan J.; Lai X.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 443
起始页码: 156
结束页码: 166
语种: 英语
英文关键词: Conodont ; Dysoxic ; Microbialite ; Permian-Triassic
英文摘要: In many tropical shallow water regions the end-Permian mass extinction event occurs at the top fossiliferous packstone beds and is immediately followed by the development of microbialite facies. Both the age and redox conditions of the microbialite have been debated and both factors are addressed here in a study of the Gaohua section (Cili County, Hunan Province, China): specifically the size distribution of pyrite framboids and high-resolution conodont biostratigraphy. The framboids populations show a broad size range with examples up to 30. microns in diameter, and indicating dysoxic but not anoxic depositional conditions. More intense dysoxia is recorded in interbedded laminated micrites but not beds of giant ooids. Both the Hindeodus parvus zone and Isarcicella isarcica zones were established with the microbialite beds being confined to the H. parvus zone. Therefore, the formation of microbialite postdates the end Permian main mass extinction and records oxygen-poor conditions even in a shallow-water setting such as Gaohua section at Cili. © 2015 Published by Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68610
Appears in Collections:过去全球变化的重建

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作者单位: State Key Laboratory of Biogeology and Environmental Geology, Faculty of Earth Sciences, China University of Geosciences, Wuhan, China; School of Earth and Environment, University of Leeds, Leeds, United Kingdom; State Key Laboratory of Geological Processes and Mineral Resources, Faculty of Earth Sciences, China University of Geosciences, Wuhan, China; GeoZentrum Nordbayern, Universität Erlangen-Nürnberg, Schlossgarten 5, Erlangen, Germany

Recommended Citation:
Wang L.,Wignall P.B.,Wang Y.,et al. Depositional conditions and revised age of the Permo-Triassic microbialites at Gaohua section, Cili County (Hunan Province, South China)[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,443
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