气候变化领域集成服务门户(CCPortal): Carbon Isotope Stratigraphy across the Devonian-Carboniferous Boundary in the East Paleo-Tethys Realm, Tibet, China

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DOI	10.3390/min13091144
	Carbon Isotope Stratigraphy across the Devonian-Carboniferous Boundary in the East Paleo-Tethys Realm, Tibet, China
	Cai, Zhanhu; Yi, Haisheng; You, Hong
发表日期	2023
EISSN	2075-163X
卷号	13 期号:9
英文摘要	The Devonian-Carboniferous boundary is one of the most important turning points in geological history, marked by the Late Paleozoic Ice Age and Late Devonian extinction. This study investigates the carbon isotope stratigraphy across the Devonian-Carboniferous boundary in Lhasa block, Tibet, China, which was part of the Gondwana continent during that time. The carbon isotope curves show a significant negative excursion trend, consistent with those of the South China block and other regions on the Laurentia continent. This global negative shift may be attributed to the burial of significant amounts of C-12-rich organic matter in strata, a consequence of the Late Devonian extinction event. Based on the carbon isotope curve and stratigraphic data of the Lhasa block, this study determined, for the first time, the specific horizon of the Devonian-Carboniferous boundary in Tibet, which is located between grayish white bioclastic limestone and yellowish-brown sandy limestone in the upper part of the Chaguoluoma Formation (D1C1(c) over cap). These findings provide a new reference for the international stratigraphic community to reconsider the position of GSSP on the Devonian-Carboniferous boundary, as well as study the Late Devonian mass extinction and Late Paleozoic glaciation.
关键词	carbon isotope Lhasa block Devonian-Carboniferous boundary Late Paleozoic glaciation Late Devonian mass extinction
英文关键词	ENVIRONMENTAL-CHANGE; EVOLUTION; CLIMATE; FRANCE; RECORD; BASIN; RAMP; SEA; END
WOS研究方向	Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing
WOS记录号	WOS:001075143300001
来源期刊	MINERALS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283028
作者单位	Guangdong University of Petrochemical Technology; Chengdu University of Technology; Guangdong University of Petrochemical Technology
推荐引用方式 GB/T 7714	Cai, Zhanhu,Yi, Haisheng,You, Hong. Carbon Isotope Stratigraphy across the Devonian-Carboniferous Boundary in the East Paleo-Tethys Realm, Tibet, China[J],2023,13(9).
APA	Cai, Zhanhu,Yi, Haisheng,&You, Hong.(2023).Carbon Isotope Stratigraphy across the Devonian-Carboniferous Boundary in the East Paleo-Tethys Realm, Tibet, China.MINERALS,13(9).
MLA	Cai, Zhanhu,et al."Carbon Isotope Stratigraphy across the Devonian-Carboniferous Boundary in the East Paleo-Tethys Realm, Tibet, China".MINERALS 13.9(2023).