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DOI	10.1016/j.palaeo.2019.109501
	On the negative carbon isotope excursion across the Wuchiapingian–Changhsingian transition: A regional event in the lower Yangtze region; South China?
	Li L.; Liao Z.; Lei L.; Lash G.G.; Chen A.; Tan X.
发表日期	2020
ISSN	0031-0182
卷号	540
英文摘要	Previous studies have reported faunal changeover and carbon isotope excursions through the Wuchiapingian–Changhsingian (W[sbnd]C) transition, a geologically significant period of time that bridged two major extinction events: the end-Permian and Guadalupian–Lopingian boundary mass extinctions. However, the causes of the carbon isotope excursion across the W[sbnd]C interval remain poorly understood. This study presents sedimentological and geochemical data from three well-exposed sections in the lower Yangtze region, South China. A strong negative carbon isotope excursion in organic matter is recorded across the W[sbnd]C interval and correlates well with other sections in South China. Sedimentology and elemental geochemistry indicate that the lower Yangtze region experienced a distinct regional deepening during the W[sbnd]C transition inducing bottom water redox changes increased primary productivity. Possible causes of the negative carbon isotope excursion at the W[sbnd]C boundary include selective preservation of organic matter during early diagenesis under anoxic/euxinic conditions and changes in terrigenous organic matter input. Both of these factors were controlled by regional relative sea-level rise triggered by contemporaneous tectonic movements. © 2019 Elsevier B.V.
英文关键词	Anoxia; Diagenesis; Environmental change; Lopingian; Productivity; Upwelling
语种	英语
scopus关键词	anoxia; biogeochemistry; carbon isotope; diagenesis; lithostratigraphy; Lopingian; organic matter; preservation; sea level change; upwelling; China; Yangtze Platform
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/150630
作者单位	State Key Laboratory of Coal Mine Disaster Dynamics and Control, School of Resources and Safety Engineering, Chongqing University, Chongqing, 400044, China; Hunan Provincial Key Laboratory of Shale Gas Resource Utilization, Hunan University of Science and Technology, Xiangtan, 411201, China; School of Geographical Sciences, Southwest University, Chongqing, 400715, China; Department of Geology and Environmental Sciences, State University of New York, Fredonia, NY 14063, United States; State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu, 610059, China; Chongqing Key Laboratory of Complex Oil and Gas Field Exploration and Development, Chongqing University of Science and Technology, Chongqing, 401331, China
推荐引用方式 GB/T 7714	Li L.,Liao Z.,Lei L.,等. On the negative carbon isotope excursion across the Wuchiapingian–Changhsingian transition: A regional event in the lower Yangtze region; South China?[J],2020,540.
APA	Li L.,Liao Z.,Lei L.,Lash G.G.,Chen A.,&Tan X..(2020).On the negative carbon isotope excursion across the Wuchiapingian–Changhsingian transition: A regional event in the lower Yangtze region; South China?.Palaeogeography, Palaeoclimatology, Palaeoecology,540.
MLA	Li L.,et al."On the negative carbon isotope excursion across the Wuchiapingian–Changhsingian transition: A regional event in the lower Yangtze region; South China?".Palaeogeography, Palaeoclimatology, Palaeoecology 540(2020).