中国科学院南海海洋研究所机构知识库
Advanced  
SCSIO OpenIR  > 中科院边缘海地质重点实验室  > 期刊论文
学科主题: Geochemistry & Geophysics
题名: New insights into cerium anomalies and mechanisms of trace metal enrichment in authigenic carbonate from hydrocarbon seeps
作者: Hu, Y ; Feng, D ; Peckmann, J ; Roberts, HH ; Chen, DF
通讯作者: feng@scsio.ac.cn ; cdf@gig.ac.cn
关键词: Hydrocarbon seeps ; Authigenic carbonates ; Rare earth elements ; Trace metals ; Redox conditions ; Trace metal enrichments
刊名: CHEMICAL GEOLOGY
发表日期: 2014
卷: 381, 页:55-66
收录类别: sci
部门归属: [Hu, Yu ; Chen, Duofu] Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Marginal Sea Geol, Guangzhou 510640, Guangdong, Peoples R China ; [Feng, Dong ; Chen, Duofu] Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China ; [Peckmann, Joern] Univ Vienna, Ctr Earth Sci, Dept Geodynam & Sedimentol, A-1090 Vienna, Austria ; [Roberts, Harry H.] Louisiana State Univ, Dept Oceanog & Coastal Sci, Inst Coastal Studies, Baton Rouge, LA 70803 USA ; [Hu, Yu] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
项目归属: 海洋地质
资助者: BOEM; NOAA; NSF of China [91228206, 41373085]; "Hundred Talents Program" of CAS; LSU Boyd Professionship
摘要: Authigenic carbonates that form at marine hydrocarbon seeps provide a unique geological archive of past local environmental conditions and pore fluid geochemistry. Recent work on such carbonates revealed variable cerium (Ce) anomalies and anomalous enrichments of certain trace metals. However, the mechanisms accounting for such anomalies remain poorly constrained. Here, we characterize the rare earth element (REE) patterns of carbonate phases and the trace metal patterns of bulk carbonate rocks sampled at three hydrocarbon seeps located at Congo Fan pockmarks (CF) and the Gulf of Mexico sites AC645 and GB425. The analyzed CF, GB425, and AC645 carbonates yielded different REE patterns, displaying positive, no, as well as negative Ce anomalies. The covariation of molybdenum (Mo) with uranium (U), including authigenic Mo (Mo-auth) and U (U-auth) enrichments as well as (Mo/U)(auth) ratios proved useful to obtain new insight into the applicability of Ce anomalies to constrain past redox conditions. Trace element patterns suggest that (1) CF carbonates formed in a restricted sulfidic environment, while (2) the AC645 site experienced intermittent oxygenation causing negative Ce anomalies, and (3) environmental conditions were variable at the GB425 mud volcano site. Interestingly, GB425 carbonates show significant Mo, arsenic (As), and antimony (Sb) enrichments with the enrichment factor of As (As-EF) correlating well with the authigenic Fe fraction. These results suggest that iron oxyhydroxides played an important role in the adsorption of Mo, As, and Sb in the water column and their transfer to the sediment. The combination of trace metal and REE geochemistry of authigenic carbonates used here is a promising tool to better assess past variability of redox conditions and biogeochemical processes at marine hydrocarbon seeps. (C) 2014 Elsevier B. V. All rights reserved.
原文出处: 查看原文
WOS记录号: WOS:000340208500006
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10607
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
New insights into cerium anomalies and mechanisms of trace metal enrichment in authigenic carbonate from hydrocarbon seeps.pdf(1008KB)----开放获取View Download

Recommended Citation:
Hu, Y; Feng, D; Peckmann, J; Roberts, HH; Chen, DF.New insights into cerium anomalies and mechanisms of trace metal enrichment in authigenic carbonate from hydrocarbon seeps,CHEMICAL GEOLOGY,2014,381():55-66
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Hu, Y]'s Articles
[Feng, D]'s Articles
[Peckmann, J]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Hu, Y]‘s Articles
[Feng, D]‘s Articles
[Peckmann, J]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: New insights into cerium anomalies and mechanisms of trace metal enrichment in authigenic carbonate from hydrocarbon seeps.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院南海海洋研究所 - Feedback
Powered by CSpace