IGGCAS OpenIR  > 油气资源研究院重点实验室
Authigenic origin for a massive negative carbon isotope excursion
Jiang, Lei1,2,3; Planavsky, Noah3; Zhao, Mingyu3; Liu, Wei4; Wang, Xiangli3,5,6
2019-02-01
Source PublicationGEOLOGY
ISSN0091-7613
Volume47Issue:2Pages:115-118
AbstractThe 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.
DOI10.1130/G45709.1
Funding OrganizationYouth 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 ; Chinese Scholarship Council ; Chinese Scholarship Council ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Packard Foundation ; Packard Foundation ; 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 ; Chinese Scholarship Council ; Chinese Scholarship Council ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Packard Foundation ; Packard Foundation ; 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 ; Chinese Scholarship Council ; Chinese Scholarship Council ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Packard Foundation ; Packard Foundation ; 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 ; Chinese Scholarship Council ; Chinese Scholarship Council ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Packard Foundation ; Packard Foundation
WOS KeywordSOUTH CHINA ; DIAGENESIS ; DELTA-C-13 ; SHURAM ; EVOLUTION ; PROXIES ; OXYGEN ; ROCKS ; WATER
Language英语
Funding ProjectYouth 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
Funding OrganizationYouth 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 ; Chinese Scholarship Council ; Chinese Scholarship Council ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Packard Foundation ; Packard Foundation ; 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 ; Chinese Scholarship Council ; Chinese Scholarship Council ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Packard Foundation ; Packard Foundation ; 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 ; Chinese Scholarship Council ; Chinese Scholarship Council ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Packard Foundation ; Packard Foundation ; 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 ; Chinese Scholarship Council ; Chinese Scholarship Council ; Alternative Earths NASA Astrobiology Institute ; Alternative Earths NASA Astrobiology Institute ; Packard Foundation ; Packard Foundation
WOS Research AreaGeology
WOS SubjectGeology
WOS IDWOS:000456424300005
PublisherGEOLOGICAL SOC AMER, INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/90174
Collection油气资源研究院重点实验室
Corresponding AuthorJiang, Lei
Affiliation1.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
Recommended Citation
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.
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