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Rhenium-Osmium isotope systematics of an Early Mesoproterozoic SEDEX polymetallic pyrite deposit in the North China Craton: Implications for geological significance and the marine osmium isotopic record
Gao, Bingyu1,2,3; Zhang, Lianchang1,2,3; Jin, Xindi1,2; Li, Zhiquan1,2,3; Li, Wenjun1,2,3
2020-02-01
Source PublicationORE GEOLOGY REVIEWS
ISSN0169-1368
Volume117Pages:10
AbstractThe rhenium-osmium (Re-Os) isotopic system preserved in ancient seafloor hydrothermal sulfide deposits can be used to gain insight into the Os composition of ancient seawater. In particular, the age of sedimentary exhalative (SEDEX) deposits can be determined by measuring Re-Os isotopes in syn-depositional pyrite, a common constituent of SEDEX deposits. Here we report on the Gaobanhe sediment-hosted, polymetallic pyrite deposit which is hosted within the Gaoyuzhuang Formation in the central part of the northern margin of the North China Craton (NCC). Re-Os isotopic data from syn-depositional pyrite yield an isochron age of 1505 +/- 55 Ma, constraining the timing of primary mineralization, as well as the minimum age of the host sediments to the Mesoproterozoic. Analyzed pyrite grains indicate an initial Os-187/Os-188 (Os-i) value of 0.181 +/- 0.066, suggesting that the mineralizing fluids were an admixture of seawater and submarine hydrothermal fluids, with the Os being primarily derived from seawater. The Os-i value is slightly higher than that of Paleoproterozoic seawater (similar to 0.13), suggesting that there was a radiogenic riverine flux to the oceans and that atmospheric oxygen must have been sufficiently high at that time to drive this increased, continental radiogenic Os input to the oceans. We propose that the Re-Os isotopic system, as recorded by these SEDEX deposits, may provide key insights when examining changes in the Os isotopic composition of seawater throughout the Precambrian.
KeywordGaobanhe deposit SEDEX Pyrite Re-Os isotopes Marine Os isotopic record
DOI10.1016/j.oregeorev.2020.103331
Funding OrganizationNational Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; Nation Key R&D Program of China
WOS KeywordRE-OS ; BROOKS RANGE ; BLACK SHALES ; OCEAN ; CONSTRAINTS ; GEOCHRONOLOGY ; BENEATH ; SULFATE ; ROCKS ; BASIN
Language英语
Funding ProjectNational Natural Science General Project[41603016] ; Nation Key R&D Program of China[2016YFC0600106]
Funding OrganizationNational Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; National Natural Science General Project ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; Nation Key R&D Program of China ; Nation Key R&D Program of China
WOS Research AreaGeology ; Mineralogy ; Mining & Mineral Processing
WOS SubjectGeology ; Mineralogy ; Mining & Mineral Processing
WOS IDWOS:000515206900025
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95606
Collection矿产资源研究院重点实验室
Corresponding AuthorZhang, Lianchang
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationKey Laboratory of Mineral Resources, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Mineral Resources, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Gao, Bingyu,Zhang, Lianchang,Jin, Xindi,et al. Rhenium-Osmium isotope systematics of an Early Mesoproterozoic SEDEX polymetallic pyrite deposit in the North China Craton: Implications for geological significance and the marine osmium isotopic record[J]. ORE GEOLOGY REVIEWS,2020,117:10.
APA Gao, Bingyu,Zhang, Lianchang,Jin, Xindi,Li, Zhiquan,&Li, Wenjun.(2020).Rhenium-Osmium isotope systematics of an Early Mesoproterozoic SEDEX polymetallic pyrite deposit in the North China Craton: Implications for geological significance and the marine osmium isotopic record.ORE GEOLOGY REVIEWS,117,10.
MLA Gao, Bingyu,et al."Rhenium-Osmium isotope systematics of an Early Mesoproterozoic SEDEX polymetallic pyrite deposit in the North China Craton: Implications for geological significance and the marine osmium isotopic record".ORE GEOLOGY REVIEWS 117(2020):10.
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