Authigenic origin for a massive negative carbon isotope excursion

doi:10.1130/G45709.1

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院油气资源研究重点实验室

	Authigenic origin for a massive negative carbon isotope excursion
	Jiang, Lei 1,2,3; Planavsky, Noah 3; Zhao, Mingyu 3; Liu, Wei 4; Wang, Xiangli 3,5,6
刊名	GEOLOGY
	2019-02-01
卷号	47 期号:2 页码:115-118
ISSN号	0091-7613
DOI	10.1130/G45709.1
英文摘要	The Neoproterozoic contains several pronounced negative carbon isotope excursions that have been the topic of intense debate. The foremost of these, the "Shuram excursion," represents the largest known carbon isotope excursion in Earth's history. These negative carbon isotope excursions have been variably interpreted to record primary seawater values and massive carbon cycle perturbations, diagenetic alteration, or porewater authigenic carbonate formation. Although there are abundant examples of recent and Phanerozoic authigenic carbonates with markedly negative carbonate carbon isotope values, these carbonates are clearly identifiable as diagenetic products, making it difficult to link them to Neoproterozoic carbon isotope excursions. Here, we report the occurrence of a Middle Triassic, shallow-marine and lagoonal succession that contains a negative carbon isotope excursion in fine crystalline and peloidal carbonates that is comparable-in terms of its magnitude and stratigraphic structure and variability-to several Neoproterozoic carbon isotope excursions. A coupled petrographic and multiple isotope (C-O-Sr-U) approach suggests that the excursion was driven by carbonate precipitation within anoxic porewaters. Extensive carbon precipitation in the upper portion of the sediment pile was likely linked to inhibited bioturbation and a high background carbonate saturation state in an evaporative setting. The discovery of a Phanerozoic authigenic carbon isotope excursion bolsters the case that some stratigraphically continuous Neoproterozoic negative carbon isotope excursions may be tied to carbonate formation within the sediment pile.
资助项目	Youth Innovation Promotion Association of the Chinese Academy of Sciences[2018088] ; Natural Science Foundation of China[41890843] ; Chinese Scholarship Council[201704910007] ; Alternative Earths NASA Astrobiology Institute ; Packard Foundation
WOS关键词	SOUTH CHINA ; DIAGENESIS ; DELTA-C-13 ; SHURAM ; EVOLUTION ; PROXIES ; OXYGEN ; ROCKS ; WATER
WOS研究方向	Geology
语种	英语
出版者	GEOLOGICAL SOC AMER, INC
WOS记录号	WOS:000456424300005
资助机构	Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Chinese Scholarship Council ; Chinese Scholarship Council ; Chinese Scholarship Council ; Chinese Scholarship Council ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Packard Foundation ; Packard Foundation ; Packard Foundation ; Packard Foundation ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Chinese Scholarship Council ; Chinese Scholarship Council ; Chinese Scholarship Council ; Chinese Scholarship Council ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Packard Foundation ; Packard Foundation ; Packard Foundation ; Packard Foundation ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Chinese Scholarship Council ; Chinese Scholarship Council ; Chinese Scholarship Council ; Chinese Scholarship Council ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Packard Foundation ; Packard Foundation ; Packard Foundation ; Packard Foundation ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Chinese Scholarship Council ; Chinese Scholarship Council ; Chinese Scholarship Council ; Chinese Scholarship Council ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Packard Foundation ; Packard Foundation ; Packard Foundation ; Packard Foundation
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/90174]
专题	地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者	Jiang, Lei
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Yale Univ, Dept Geol & Geophys, POB 6666, New Haven, CT 06511 USA 4.PetroChina, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China 5.Univ S Alabama, Dept Marine Sci, Mobile, AL 36688 USA 6.Dauphin Isl Sea Lab, Dauphin Isl, AL 36528 USA
推荐引用方式 GB/T 7714	Jiang, Lei,Planavsky, Noah,Zhao, Mingyu,et al. Authigenic origin for a massive negative carbon isotope excursion[J]. GEOLOGY,2019,47(2):115-118.
APA	Jiang, Lei,Planavsky, Noah,Zhao, Mingyu,Liu, Wei,&Wang, Xiangli.(2019).Authigenic origin for a massive negative carbon isotope excursion.GEOLOGY,47(2),115-118.
MLA	Jiang, Lei,et al."Authigenic origin for a massive negative carbon isotope excursion".GEOLOGY 47.2(2019):115-118.