Carbon isotope of the Early Cretaceous sediments from the West Pacific and the Sulu orogenic belt: Implying the global atmospheric pCO2 changes during the Early Aptian Oceanic Anoxic Event 1a

doi:10.1016/j.dsr.2022.103954

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	Carbon isotope of the Early Cretaceous sediments from the West Pacific and the Sulu orogenic belt: Implying the global atmospheric pCO2 changes during the Early Aptian Oceanic Anoxic Event 1a
	Wu, Si-fan 2,3; Li, Cong-ying 1,2; Huang, Jing 2
刊名	DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
	2023-03-01
卷号	193 页码:9
关键词	Carbon isotope AtmosphericpCO2 Ocean Anoxic Event 1a Early Cretaceous Western Pacific East China
ISSN号	0967-0637
DOI	10.1016/j.dsr.2022.103954
通讯作者	Li, Cong-ying(licongying@qdio.ac.cn) ; Huang, Jing(hjmail@qdio.ac.cn)
英文摘要	Multiple lines of evidence revealed that enormous CO2 was input into the ocean-atmosphere system during Oceanic Anoxic Event 1a (OAE 1a), which led to a series of environmental perturbations (e.g. temperature rising, enhanced weathering, promoted primary productivity and marine anoxia). Among them, increased carbon isotope fractionation (Delta 13Ccarb-org) between the carbonate (delta 13Ccarb) and organic carbon (delta 13Corg) in the sedi-ments is one of the most important indicators to the enhanced atmospheric pCO2. However, only a few research reported high-resolution paired carbon isotopes during OAE 1a, which were almost limited around the western Tethys. Here, we report new paired carbon isotopes of the Early Cretaceous sediments from the ODP site 866A in the western Pacific and the Lingshan Island section in the Sulu orogenic belt. The delta 13Ccarb curves from both sections correlate well with OAE 1a, in which a positive delta 13Ccarb excursion is identified between the C3-C6 segments. The Delta 13Ccarb-org displays a-7-11 parts per thousand positive shift coinciding with the delta 13Ccarb excursion, indicating a remarkable increase and a gradual decrease in CO2 in water and atmosphere, which further support significant atmospheric pCO2 changes during OAE 1a on a global scale. The sediments also show a few variations in carbon isotope records during OAE 1a between different locations, which may reflect different influences from local environments, and the deviations of stratigraphic correlation and diagenesis cannot be ruled out either.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22050103] ; Strategic Priority Research Program of the Chinese Academy of Sciences[LSKJ202204100] ; National Natural Science Foundation of China[42176070]
WOS关键词	LINGSHAN ISLAND ; PAIRED DELTA-C-13(CARB) ; VOLCANIC-ROCKS ; ORGANIC-MATTER ; NORTH-AMERICA ; OAE 1A ; PALEOCEANOGRAPHY ; GEOCHEMISTRY ; EVOLUTION ; BASIN
WOS研究方向	Oceanography
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000993062700001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/183150]
专题	海洋研究所_深海极端环境与生命过程研究中心
通讯作者	Li, Cong-ying; Huang, Jing
作者单位	1.Lab Marine Mineral Resources, Qingdao Natl Lab Marine Sci & Technol, Qingdao 266237, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wu, Si-fan,Li, Cong-ying,Huang, Jing. Carbon isotope of the Early Cretaceous sediments from the West Pacific and the Sulu orogenic belt: Implying the global atmospheric pCO2 changes during the Early Aptian Oceanic Anoxic Event 1a[J]. DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,2023,193:9.
APA	Wu, Si-fan,Li, Cong-ying,&Huang, Jing.(2023).Carbon isotope of the Early Cretaceous sediments from the West Pacific and the Sulu orogenic belt: Implying the global atmospheric pCO2 changes during the Early Aptian Oceanic Anoxic Event 1a.DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,193,9.
MLA	Wu, Si-fan,et al."Carbon isotope of the Early Cretaceous sediments from the West Pacific and the Sulu orogenic belt: Implying the global atmospheric pCO2 changes during the Early Aptian Oceanic Anoxic Event 1a".DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS 193(2023):9.