气候变化领域集成服务门户(CCPortal): A multi-source proxies approach to identifying local processes in lower Permian black shale impacting on the sedimentary environment of eastern Palaeo-Tethys Ocean

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DOI	10.1016/j.marpetgeo.2024.106859
	A multi-source proxies approach to identifying local processes in lower Permian black shale impacting on the sedimentary environment of eastern Palaeo-Tethys Ocean
	Sun, Chunwei; Ling, Sixiang; Li, Xiaoning; Wu, Xiyong; Derron, Marc-Henri; Jaboyedoff, Michel
发表日期	2024
ISSN	0264-8172
EISSN	1873-4073
起始页码	165
卷号	165
英文摘要	Foreland basin tectonics along the eastern Palaeo-Tethys Ocean produced a complex and dynamic pattern of sediment delivery to adjacent basins. Environmental processes at the local scale significantly disrupt regional ones, making the analysis of sedimentary evolution difficult. This study investigated the Lower Permian Liangshan Formation black shale formed in such geological setting, rich in cherts with exceptionally high silica and fluctuating major and trace element concentrations, detected using XRD, XRF, and ICP-MS techniques. Different types of silica, including detrital quartz, recrystallised radiolaria, microcrystalline quartz, and quartz veins, were identified using SEM and SEM-CL imaging. Geochemical characterisation and enrichment pattern analyses indicated that the structural setting was characterised by proximity to the oceanic island arc, continental island arc, and passive margin, and the major zone of sediment accumulation was a semi-restricted backarc basin under the subduction zone. The processes controlling sediment accumulation included hydrothermal activity, upwelling, biogenic silica, and terrestrial inputs. Although upwelling interfered with the mobility and migration of hydrothermal elements, it introduced abundant nutrients, and together with hydrothermal fluids, it contributed to the subsequent boom in siliceous organisms. Terrigenous inputs induced by land uplift significantly diluted the components from other sources. This multi-source proxies approach not only enables researchers to disentangle local from regional processes but also sheds light on how these diverse environmental forces interact within intricate earth systems, which enhance our comprehension of geologic history and inform ongoing studies focused on climate change mitigation strategies.
英文关键词	Black shale; Palaeo-Tethys ocean; Multi -source; Terrigenous input; Hydrothermal activity
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001235343600001
来源期刊	MARINE AND PETROLEUM GEOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/300635
作者单位	Southwest Jiaotong University; University of Lausanne; Southwest Jiaotong University; Xihua University
推荐引用方式 GB/T 7714	Sun, Chunwei,Ling, Sixiang,Li, Xiaoning,et al. A multi-source proxies approach to identifying local processes in lower Permian black shale impacting on the sedimentary environment of eastern Palaeo-Tethys Ocean[J],2024,165.
APA	Sun, Chunwei,Ling, Sixiang,Li, Xiaoning,Wu, Xiyong,Derron, Marc-Henri,&Jaboyedoff, Michel.(2024).A multi-source proxies approach to identifying local processes in lower Permian black shale impacting on the sedimentary environment of eastern Palaeo-Tethys Ocean.MARINE AND PETROLEUM GEOLOGY,165.
MLA	Sun, Chunwei,et al."A multi-source proxies approach to identifying local processes in lower Permian black shale impacting on the sedimentary environment of eastern Palaeo-Tethys Ocean".MARINE AND PETROLEUM GEOLOGY 165(2024).