NIGPAS OpenIR
Kerogen-specific isotope variations during the end-Permian mass extinction in South China
Jiang, Lei1,2,3,4; Cai, Chunfang1,3,4; Xiang, Lei5,6; Fan, Junxuan7,8; Li, Kaikai9; Cai, Liulu10; Algeo, Thomas J.11,12; Zhang, Feifei7,8
2022-03-01
发表期刊EARTH-SCIENCE REVIEWS
ISSN0012-8252
卷号226页码:15
摘要

Sulfur isotopic variation has been widely used to study the environmental backdrop of the end-Permian mass extinction (EPME), although research to date has focused mostly on carbonate-associated sulfate (CAS) and pyrite. Study of the delta S-34 of kerogen, as well as of its H- and C-isotopic compositions, is relatively rare, although such data have the potential to shed new light on our understanding of the proximate driver of the EPME event. Here, we report paired delta S-34(pyrite) and delta S-34(kerogen) values for three widely spaced end-Permian marine sections from South China (Meishan, Shangsi, and Guanzi) that represent a transect from upper-slope (shallow-water) to basinal (deep-water) facies, as well as additional data for Meishan (i.e., delta S-34(CAS), delta H-2(kerogen), and delta C-13(kerogen)). Our results show that oxidation of isotopically light H2S in upwelled anoxic watermasses led to negative shifts of delta S-34(CAS), delta S-34(kerogen) and delta S-34(pyrite) in the ocean-surface layer during the Late Permian, and an increase of Delta S-34(CAS-kerogen) in the upper-slope Meishan section. High Delta S-34(kerogen-pyrite) (>10 parts per thousand) in the Meishan section indicates that slow pyritization occurred considerably below the sediment-water interface. In contrast, the lower-slope Shangsi and deep-water Guanzi sections show more negative delta S-34 values for both kerogen and pyrite, with smaller Delta S-34(kerogen-pyrite) (mainly 5-10 parts per thousand), implying open-system microbial sulfate reduction (MSR) in an anoxic deep watermass. A large negative shift in delta H-2(kerogen) from the uppermost Permian to the lowermost Triassic is most plausibly attributed to increased sedimentation rates and organic matter inputs due to collapse of terrestrial ecosystems. High sedimentation rates may have been contributed to observed subsequent increase of (poly) sulfide delta S-34 within the Lower Triassic in shallow-water facies. Our study thus demonstrates the utility of integrated analysis of S-isotopes in pyrite, kerogen, and CAS, coupled with H- and C-isotopic data of kerogen for tracking dynamic environmental changes during the Permian-Triassic transition and possibly other major events in Earth history.

关键词Kerogen Pyrite CAS delta S-34 delta H-2 delta C-13 End-Permian mass extinction South China
DOI10.1016/j.earscirev.2021.103912
收录类别SCI
语种英语
关键词[WOS]PHOTIC-ZONE EUXINIA ; TRIASSIC BOUNDARY ; SEAWATER SULFATE ; ORGANIC-MATTER ; OCEANIC ANOXIA ; SULFUR-DIOXIDE ; MARINE ANOXIA ; CARBON-CYCLE ; 2 EPISODES ; DISPROPORTIONATION
资助项目National Science Foundation of China[41730424] ; National Science Foundation of China[41961144023] ; National Science Foundation of China[41972149] ; National Science Foundation of China[41890843] ; National Science Foundation of China[42073002] ; National Key Research and Development Project[2019YFB1504101] ; PetroChina Innovation Foundation ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2018088] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB26000000] ; Fundamental Research Funds for the Central Universities[0206-14380125] ; Frontiers Science Center for Critical Earth Material Cycling Fund[DLTD2102]
WOS研究方向Geology
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000820116600001
项目资助者National Science Foundation of China ; National Key Research and Development Project ; PetroChina Innovation Foundation ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities ; Frontiers Science Center for Critical Earth Material Cycling Fund
出版者ELSEVIER
文献类型期刊论文
条目标识符http://ir.nigpas.ac.cn/handle/332004/40999
专题中国科学院南京地质古生物研究所
通讯作者Jiang, Lei; Cai, Chunfang
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, 39 East Beijing Rd, Nanjing 210008, Peoples R China
6.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, 39 East Beijing Rd, Nanjing 210008, Peoples R China
7.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, 163 Xianlin Ave, Nanjing 210023, Jiangsu, Peoples R China
8.Nanjing Univ, Frontiers Sci Ctr Crit Earth Mat Cycling, 163 Xianlin Ave, Nanjing 210023, Jiangsu, Peoples R China
9.China Univ Geosci Beijing, Sch Energy Resources, Beijing 100083, Peoples R China
10.GRINM Resources & Environm Tech Co Ltd, Beijing 101407, Peoples R China
推荐引用方式
GB/T 7714
Jiang, Lei,Cai, Chunfang,Xiang, Lei,et al. Kerogen-specific isotope variations during the end-Permian mass extinction in South China[J]. EARTH-SCIENCE REVIEWS,2022,226:15.
APA Jiang, Lei.,Cai, Chunfang.,Xiang, Lei.,Fan, Junxuan.,Li, Kaikai.,...&Zhang, Feifei.(2022).Kerogen-specific isotope variations during the end-Permian mass extinction in South China.EARTH-SCIENCE REVIEWS,226,15.
MLA Jiang, Lei,et al."Kerogen-specific isotope variations during the end-Permian mass extinction in South China".EARTH-SCIENCE REVIEWS 226(2022):15.
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