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Using iron speciation in authigenic carbonates from hydrocarbon seeps to trace variable redox conditions

文献类型：期刊论文

作者Hu, Yu1,5; Feng, Dong2; Chen, Linying2; Zheng, Guodong3; Peckmann, Joern4; Chen, Duofu1
刊名MARINE AND PETROLEUM GEOLOGY
出版日期2015-11-01
卷号67页码:111-119
关键词Hydrocarbon seep Authigenic carbonate Redox condition Iron Mossbauer spectroscopy
DOI10.1016/j.marpetgeo.2015.05.001
文献子类Article
英文摘要Seepage of hydrocarbon-rich fluids out of the marine sedimentary column is characterized by temporal changes of flow intensity and resultant spatially variable redox conditions. Authigenic carbonates at marine hydrocarbon seeps provide excellent geological and geochemical archives that serve to explore seepage dynamics over time. In this study, we investigated the potential of Mossbuaer spectroscopy and Fe contents of seep-related authigenic carbonates from the Congo Fan, the Gulf of Mexico, and the Black Sea for reconstructing past redox conditions and fluid seepage activity at cold seeps. The Fe speciation observed by Mossbauer spectroscopy and Fe contents suggest that (1) the Congo Fan carbonates precipitated in a sulfidic environment, (2) the formation conditions of seep carbonates were variable at the Gulf of Mexico seep site, ranging from oxic to suboxic and anoxic and even spanning into the methanogenic zone, and (3) the stratified water column of the Black Sea or suboxic condition resulted in low Fe contents of Black Sea carbonates. The study reveals that Fe speciation can provide constraints on the wide range of redox conditions that imprinted seep carbonates during the life span of seepage. Similarly, Mossbauer spectroscopy - particularly when used in combination with the analysis of redoxsensitive elements - is a promising tool to trace variable redox conditions in marine paleoenvironments other than seeps. (C) 2015 Elsevier Ltd. All rights reserved.
WOS关键词GULF-OF-MEXICO ; SOUTH CHINA SEA ; ANAEROBIC METHANE OXIDATION ; NORTHERN CONTINENTAL-SLOPE ; RARE-EARTH-ELEMENTS ; COLD SEEPS ; BLACK-SEA ; ENVIRONMENTAL-CONDITIONS ; GEOCHEMICAL SIGNATURES ; MARINE-SEDIMENTS
WOS研究方向Geology
语种英语
WOS记录号WOS:000366066500007
资助机构NSF of China(91228206 ; NSF of China(91228206 ; CAS ; CAS ; 41422602 ; 41422602 ; 41273112) ; 41273112) ; NSF of China(91228206 ; NSF of China(91228206 ; CAS ; CAS ; 41422602 ; 41422602 ; 41273112) ; 41273112)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62153]  
专题地质与地球物理研究所_兰州油气中心
作者单位1.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Marginal Sea Geol, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources, Gansu Prov Key Lab Petr Resources Res, Lanzhou 730000, Peoples R China
4.Univ Vienna, Dept Geodynam & Sedimentol, Ctr Earth Sci, A-1090 Vienna, Austria
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Hu, Yu,Feng, Dong,Chen, Linying,et al. Using iron speciation in authigenic carbonates from hydrocarbon seeps to trace variable redox conditions[J]. MARINE AND PETROLEUM GEOLOGY,2015,67:111-119.
APA Hu, Yu,Feng, Dong,Chen, Linying,Zheng, Guodong,Peckmann, Joern,&Chen, Duofu.(2015).Using iron speciation in authigenic carbonates from hydrocarbon seeps to trace variable redox conditions.MARINE AND PETROLEUM GEOLOGY,67,111-119.
MLA Hu, Yu,et al."Using iron speciation in authigenic carbonates from hydrocarbon seeps to trace variable redox conditions".MARINE AND PETROLEUM GEOLOGY 67(2015):111-119.

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来源：地质与地球物理研究所

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