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Distinguishing microbial from thermochemical sulfate reduction from the upper Ediacaran in South China

文献类型：期刊论文

作者Hu, Yongjie1,2; Cai, Chunfang2,3,4,5; Liu, Dawei6; Peng, Yanyan2,3,5; Wei, Tianyuan2,3,5; Jiang, Ziwen2,3,5; Ma, Rongtu1; Jiang, Lei2,5
刊名CHEMICAL GEOLOGY
出版日期2021-11-20
卷号583页码:17
关键词Microbial sulfate reduction Thermochemical sulfate reduction Cryptic sulfur cycle Sulfur disproportionation
ISSN号0009-2541
DOI10.1016/j.chemgeo.2021.120482
英文摘要It is hard to distinguish pyrites generated by microbial sulfate reduction (MSR) from thermochemical sulfate reduction (TSR). The upper Ediacaran Dengying Formation (ca 551-541 Ma) of Sichuan basin is chosen to study for this purpose by means of petrological, bulk and micrometer-scale analyses on barite, pyrite, calcite, and dolomite for carbon and sulfur isotope and rare earth elements and yttrium (REY) compositions. We find that MSR-derived pyrites precipitated from near-surface to shallow burial settings are characterized by seawater-like REY patterns and superchondritic Y/Ho ratios (74.3 +/- 9.5), and have delta S-34(pyrite) values in a wide range from -36.8 parts per thousand to 34.8 parts per thousand, positively correlated with arsenic contents, likely through cryptic sulfur cycles driven by arsenic. In contrast, TSR-derived pyrites generated during deep burial settings have REY characterized by non-seawater-like patterns and chondritic Y/Ho ratios (33.6 +/- 5.1), and show small sulfur isotopic fractionations (similar to 10.5 parts per thousand). TSR-pyrites yield both U-shaped and bell-shaped delta S-34 transects compared with U-shaped distributions of MSR-pyrites. The calcites associated with the TSR-pyrites show LREE enrichment, elevated Y/Ho ratios (85.8 +/- 14.2) and negative delta C-13 values, likely resulting from decomposition of organic matter. This study highlights a combination method from REY patterns, delta C-13 and delta S-34 values from analyses on micro-sized pyrite and the associated calcites can be used to effectively distinguish MSR from TSR.
WOS关键词RARE-EARTH-ELEMENTS ; SULFUR ISOTOPE FRACTIONATION ; NEOPROTEROZOIC DOUSHANTUO FORMATION ; BOHAI BAY BASIN ; SICHUAN BASIN ; GEOCHEMICAL CHARACTERISTICS ; TRACE-ELEMENT ; CARBONATE RESERVOIRS ; HYDROTHERMAL FLUIDS ; DOLOMITE RESERVOIRS
资助项目Natural Science Foundation of China[41730424] ; Natural Science Foundation of China[4181101560]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000702309700024
出版者ELSEVIER
资助机构Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/102971]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Cai, Chunfang
作者单位1.Sinopec Int Petr Explorat & Prod Corp, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
4.Yangtze Univ, Key Lab Explorat Technol Oil & Gas Resources, Minist Educ, Wuhan 430100, Peoples R China
5.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
6.SINOPEC, Petr Explorat & Prod Res Inst, Beijing 102206, Peoples R China
推荐引用方式
GB/T 7714		 Hu, Yongjie,Cai, Chunfang,Liu, Dawei,et al. Distinguishing microbial from thermochemical sulfate reduction from the upper Ediacaran in South China[J]. CHEMICAL GEOLOGY,2021,583:17.
APA Hu, Yongjie.,Cai, Chunfang.,Liu, Dawei.,Peng, Yanyan.,Wei, Tianyuan.,...&Jiang, Lei.(2021).Distinguishing microbial from thermochemical sulfate reduction from the upper Ediacaran in South China.CHEMICAL GEOLOGY,583,17.
MLA Hu, Yongjie,et al."Distinguishing microbial from thermochemical sulfate reduction from the upper Ediacaran in South China".CHEMICAL GEOLOGY 583(2021):17.

入库方式： OAI收割

来源：地质与地球物理研究所

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