KMS Nanjing Institute of Geology and Palaeonotology,CAS
Methane-derived authigenic carbonate from the lower Doushantuo Formation of South China: Implications for seawater sulfate concentration and global carbon cycle in the early Ediacaran ocean | |
Zhou, Chuanming (周传明)1; Guan, Chengguo (关成国)1; Cui, Huan2,3; Ouyang, Qing (欧阳晴)1,4; Wang, Wei (王伟 女)1 | |
2016-11-01 | |
发表期刊 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY |
ISSN | 0031-0182 |
卷号 | 461页码:145-155 |
摘要 | Authigenic carbonate associated with anaerobic oxidation of methane (AOM), usually via microbial sulfate reduction (MSR) or ferric iron reduction, is generally characterized by extremely low delta C-13 values (<-30 parts per thousand, VPDB). This has been used as one of the major diagnostic features for the recognition of hydrocarbon seep carbonate in the geological past. Previous reports on Precambrian authigenic carbonates are rare, limiting our understanding of the effects of their deposition on the Earth's carbon isotopic mass balance. In this study, mainly based on petrographic features and pronounced negative delta C-13 values as low as -38.1 parts per thousand, we discovered authigenic calcite cement immediately above the cap dolostone in the basal Ediacaran Doushantuo Formation in the Jiulongwan section, Yangtze Gorges area, South China. Our observations not only provide direct evidence for the involvement of AOM during carbonate precipitation in the early Ediacaran (similar to 635 Ma), but also suggest that the seawater sulfate concentrations in the early Ediacaran may have been higher than previously thought. (C) 2016 Elsevier B.V. All rights reserved. |
关键词 | Anaerobic Oxidation Of Methane Microbial Sulfate Reduction Cold Seep Deposits Carbon Cycle Sulfur Cycle Carbon Isotope Chemostratigraphy |
DOI | 10.1016/j.palaeo.2016.08.017 |
语种 | 英语 |
关键词[WOS] | Low Marine Sulfate ; Anaerobic Oxidation ; Isotopic Composition ; Hydrocarbon Seeps ; Geological Record ; Secular Variation ; Johnnie Formation ; Rock Interaction ; Organic-matter ; Deep Biosphere |
资助项目 | Ministry of Science and Technology of China[2013CB835005] ; Chinese Academy of Sciences[KZZD-EW-02] |
WOS研究方向 | Physical Geography ; Geology ; Paleontology |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology |
WOS记录号 | WOS:000385599900013 |
项目资助者 | Ministry of Science and Technology of China ; Chinese Academy of Sciences |
出版者 | ELSEVIER SCIENCE BV |
文献类型 | 期刊论文 |
条目标识符 | http://ir.nigpas.ac.cn/handle/332004/12352 |
专题 | 中国科学院南京地质古生物研究所 其他 |
通讯作者 | Zhou, Chuanming (周传明) |
作者单位 | 1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Key Lab Econ Stratig & Palaeogeog, Nanjing 210008, Peoples R China 2.Univ Wisconsin, Dept Geosci, Madison, WI 53706 USA 3.Univ Wisconsin, NASA, Astrobiol Inst, Madison, WI 53706 USA 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Zhou, Chuanming ,Guan, Chengguo ,Cui, Huan,et al. Methane-derived authigenic carbonate from the lower Doushantuo Formation of South China: Implications for seawater sulfate concentration and global carbon cycle in the early Ediacaran ocean[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2016,461:145-155. |
APA | Zhou, Chuanming ,Guan, Chengguo ,Cui, Huan,Ouyang, Qing ,&Wang, Wei .(2016).Methane-derived authigenic carbonate from the lower Doushantuo Formation of South China: Implications for seawater sulfate concentration and global carbon cycle in the early Ediacaran ocean.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,461,145-155. |
MLA | Zhou, Chuanming ,et al."Methane-derived authigenic carbonate from the lower Doushantuo Formation of South China: Implications for seawater sulfate concentration and global carbon cycle in the early Ediacaran ocean".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 461(2016):145-155. |
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