气候变化领域集成服务门户(CCPortal): Environmental instability prior to end-Permian mass extinction reflected in biotic and facies changes on shallow carbonate platforms of the Nanpanjiang Basin (South China)

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DOI	10.1016/j.palaeo.2018.05.011
	Environmental instability prior to end-Permian mass extinction reflected in biotic and facies changes on shallow carbonate platforms of the Nanpanjiang Basin (South China)
	Tian L.; Tong J.; Xiao Y.; Benton M.J.; Song H.; Song H.; Liang L.; Wu K.; Chu D.; Algeo T.J.
发表日期	2019
ISSN	0031-0182
起始页码	23
结束页码	36
卷号	519
英文摘要	Shallow carbonate platforms exhibit major changes in faunal composition and facies types during the latest Permian and earliest Triassic. Although the microbialites that developed following the latest Permian mass extinction (LPME) have attracted wide attention, temporal variations in shallow-platform facies and faunas prior to the LPME have been less thoroughly studied. Here, we analyze diversity patterns and variation in skeletal composition in three Upper Permian sections from isolated carbonate platforms of the Nanpanjiang Basin. In addition to the well-known transition from fossil-rich Upper Permian limestones to fossil-poor Permian-Triassic boundary (PTB) microbialites, these sections exhibit several distinct changes that predate the LPME. First, foram faunas show a shift from non-fusulinid-dominated to fusulinid-dominated communities in the <1-m interval below the LPME horizon of each section, reflecting a shallowing trend over ~20–30 kyr preceding the mass extinction. Second, a “foram gap” and concurrent “detrital event” are observed below the LPME in all three sections, recording a rapid influx of detrital siliciclastics that predated the mass extinction by <60 kyr. These features reflect a degree of marine environmental instability prior to the end-Permian mass extinction. The sudden influx of siliciclastics may represent an early perturbation to terrestrial ecosystems linked to incipient Siberian Traps magmatism, resulting in secondary effects in marine environments through increased sediment yields. © 2018 Elsevier B.V.
英文关键词	Bioclastic limestone; Early Triassic; Foraminifera; Late Permian; Microbialite; Microfacies
语种	英语
scopus关键词	carbonate; facies; foraminifera; magmatism; mass extinction; microbialite; microfacies; Permian-Triassic boundary; sediment yield; terrestrial ecosystem; China; Nanpanjiang Basin; Foraminifera; Fusulinida
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151045
作者单位	State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430074, China; School of Earth Sciences, University of BristolBS8 1RJ, United Kingdom; Department of Geology, University of Cincinnati, Cincinnati, OH 45221-0013, United States; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan, 430074, China
推荐引用方式 GB/T 7714	Tian L.,Tong J.,Xiao Y.,et al. Environmental instability prior to end-Permian mass extinction reflected in biotic and facies changes on shallow carbonate platforms of the Nanpanjiang Basin (South China)[J],2019,519.
APA	Tian L..,Tong J..,Xiao Y..,Benton M.J..,Song H..,...&Algeo T.J..(2019).Environmental instability prior to end-Permian mass extinction reflected in biotic and facies changes on shallow carbonate platforms of the Nanpanjiang Basin (South China).Palaeogeography, Palaeoclimatology, Palaeoecology,519.
MLA	Tian L.,et al."Environmental instability prior to end-Permian mass extinction reflected in biotic and facies changes on shallow carbonate platforms of the Nanpanjiang Basin (South China)".Palaeogeography, Palaeoclimatology, Palaeoecology 519(2019).