Rare earth elements of seep carbonates: Indication for redox variations and microbiological processes at modern seep sites

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	Rare earth elements of seep carbonates: Indication for redox variations and microbiological processes at modern seep sites
	[Feng, Dong ; Chen, Duofu] Chinese Acad Sci, Key Lab Marginal Sea Geol, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China ; [Lin, Zhijia ; Bian, Youyan ; Chen, Duofu] Chinese Acad Sci, Key Lab Marginal Sea Geol, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China ; [Peckmann, Joern] Univ Vienna, Dept Geodynam & Sedimentol, Ctr Earth Sci, A-1090 Vienna, Austria ; [Bohrmann, Gerhard] Univ Bremen, MARUM, D-28334 Bremen, Germany ; [Roberts, Harry H.] Louisiana State Univ, Inst Coastal Studies, Dept Oceanog & Coastal Sci, Baton Rouge, LA 70803 USA ; [Lin, Zhijia] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2013
卷号	65 页码:27-33
关键词	Rare earth elements Seep carbonates Redox conditions Methane seeps
ISSN号	1367-9120
通讯作者	cdf@gig.ac.cn
中文摘要	At marine seeps, methane is microbially oxidized resulting in the precipitation of carbonates close to the seafloor. Methane oxidation leads to sulfate depletion in sediment pore water, which induces a change in redox conditions. Rare earth element (REE) patterns of authigenic carbonate phases collected from modern seeps of the Gulf of Mexico, the Black Sea, and the Congo Fan were analyzed. Different carbonate minerals including aragonite and calcite with different crystal habits have been selected for analysis. Total REE content (Sigma REE) of seep carbonates varies widely, from 0.1 ppm to 42.5 ppm, but a common trend is that the Sigma REE in microcrystalline phases is higher than that of the associated later phases including micospar, sparite and blocky cement, suggesting that Sigma REE may be a function of diagenesis. The shale-normalized REE patterns of the seep carbonates often show different Ce anomalies even in samples from a specific site, suggesting that the formation conditions of seep carbonates are variable and complex. Overall, our results show that apart from anoxic, oxic conditions are at least temporarily common in seep environments. (C) 2012 Elsevier Ltd. All rights reserved.
学科主题	Geosciences, Multidisciplinary
资助信息	The seep carbonates from the Gulf of Mexico were obtained on the cruises sponsored by the Bureau of Ocean Energy Management, Regulation and Enforcement (BOEMRE; formerly MMS). We thank F. Wang (GIG, CAS) and L. Qi (IG, CAS) for technical assistance. We thank the journal editor and anonymous reviewers for constructive comments, which considerably improved the manuscript. The research was partially supported by the Knowledge Innovation Program of CAS (KZCX2-YW-GJ03), "Hundred Talents Program" of CAS, NSF of China (91028012, 912282009), and GIGCAS 135 Project Y234021001. This study was also supported by the Deutsche Forschungsgemeinschaft through the DFG-Research Center 'The Ocean in the Earth System', Bremen.
原文出处	PERGAMON-ELSEVIER SCIENCE LTD
语种	英语
WOS记录号	WOS:000317449100005
公开日期	2015-01-22
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/11135]
专题	南海海洋研究所_中科院边缘海地质重点实验室
推荐引用方式 GB/T 7714	[Feng, Dong,Chen, Duofu] Chinese Acad Sci, Key Lab Marginal Sea Geol, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China,[Lin, Zhijia,et al. Rare earth elements of seep carbonates: Indication for redox variations and microbiological processes at modern seep sites[J]. JOURNAL OF ASIAN EARTH SCIENCES,2013,65:27-33.
APA	[Feng, Dong.,Chen, Duofu] Chinese Acad Sci, Key Lab Marginal Sea Geol, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China.,[Lin, Zhijia.,Bian, Youyan.,Chen, Duofu] Chinese Acad Sci, Key Lab Marginal Sea Geol, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China.,...&[Lin, Zhijia] Univ Chinese Acad Sci, Beijing 100049, Peoples R China.(2013).Rare earth elements of seep carbonates: Indication for redox variations and microbiological processes at modern seep sites.JOURNAL OF ASIAN EARTH SCIENCES,65,27-33.
MLA	[Feng, Dong,et al."Rare earth elements of seep carbonates: Indication for redox variations and microbiological processes at modern seep sites".JOURNAL OF ASIAN EARTH SCIENCES 65(2013):27-33.