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Progressive oxidation of anoxic and ferruginous deep-water during deposition of the terminal Ediacaran Laobao Formation in South China

文献类型：期刊论文

作者Chang, Hua-Jin1,2,3; Chu, Xue-Lei3,4; Feng, Lian-Jun3; Huang, Jing3
刊名PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
出版日期2012-03-01
卷号321页码:80-87
关键词Redox condition Oxidation Redox-sensitive trace elements Sulfur isotope Terminal Ediacaran South China
ISSN号0031-0182
DOI10.1016/j.palaeo.2012.01.019
文献子类Article
英文摘要The Laobao Formation, a black chert sequence, was deposited in deep-water in the terminal Ediacaran Nanhua Basin. The chert samples have finely laminated fabric, and have no distinct recrystallization or metasomatic relict texture. There is an extremely limited detrital component and no obvious hydrothermal influence. Therefore, the chert appears to be an authigenic deep-water precipitate. The trace elements in the chert were mainly derived from seawater and thus could be a relatively unique proxy for late Precambrian seawater conditions. Redox-sensitive trace elements and relevant ratios were used to reconstruct the depositional environment of the chert sequence. Combined with iron species results of the Laobao Formation, enrichments in redox-sensitive trace elements (U, V, Mo), depleted Mn, very low Th/U ratios (<2), high V/Sc (>7.9) and V/(V + Ni) (>0.6) ratios suggest an overall anoxic and ferruginous conditions over the deposition of the chert. The pyrite sulfur isotope compositions are between - 15.4 parts per thousand and 11.0 parts per thousand, and show a decreasing trend toward the top of the section, possibly implying sulfate concentration gradually increased in the terminal Ediacaran Nanhua Basin, which is consistent with implication of their pyrite framboid diameter characteristics. Our data confirm that deep-water in the Nanhua Basin was still anoxic and ferruginous, and it was progressively oxidized during the terminal Ediacaran period, which could create necessary conditions for the emergence and rapid evolution of multicellular metazoans. (C) 2012 Elsevier B.V. All rights reserved.
WOS关键词REDOX-SENSITIVE METALS ; MO-PGE-AU ; BLACK SHALES ; TRACE-ELEMENT ; DOUSHANTUO FORMATION ; YANGTZE PLATFORM ; OCEANIC ANOXIA ; SULFUR ; GEOCHEMISTRY ; SEDIMENTS
WOS研究方向Physical Geography ; Geology ; Paleontology
语种英语
WOS记录号WOS:000301912000007
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China(41002011) ; National Natural Science Foundation of China(41002011) ; National Natural Science Foundation of China(41002011) ; National Natural Science Foundation of China(41002011) ; Chu(41172029 ; Chu(41172029 ; Chu(41172029 ; Chu(41172029 ; MOST(2011CB808805) ; MOST(2011CB808805) ; MOST(2011CB808805) ; MOST(2011CB808805) ; State Key Laboratory of Continental Dynamics, Northwest University in China ; State Key Laboratory of Continental Dynamics, Northwest University in China ; State Key Laboratory of Continental Dynamics, Northwest University in China ; State Key Laboratory of Continental Dynamics, Northwest University in China ; 40873007) ; 40873007) ; 40873007) ; 40873007) ; National Natural Science Foundation of China(41002011) ; National Natural Science Foundation of China(41002011) ; National Natural Science Foundation of China(41002011) ; National Natural Science Foundation of China(41002011) ; Chu(41172029 ; Chu(41172029 ; Chu(41172029 ; Chu(41172029 ; MOST(2011CB808805) ; MOST(2011CB808805) ; MOST(2011CB808805) ; MOST(2011CB808805) ; State Key Laboratory of Continental Dynamics, Northwest University in China ; State Key Laboratory of Continental Dynamics, Northwest University in China ; State Key Laboratory of Continental Dynamics, Northwest University in China ; State Key Laboratory of Continental Dynamics, Northwest University in China ; 40873007) ; 40873007) ; 40873007) ; 40873007) ; National Natural Science Foundation of China(41002011) ; National Natural Science Foundation of China(41002011) ; National Natural Science Foundation of China(41002011) ; National Natural Science Foundation of China(41002011) ; Chu(41172029 ; Chu(41172029 ; Chu(41172029 ; Chu(41172029 ; MOST(2011CB808805) ; MOST(2011CB808805) ; MOST(2011CB808805) ; MOST(2011CB808805) ; State Key Laboratory of Continental Dynamics, Northwest University in China ; State Key Laboratory of Continental Dynamics, Northwest University in China ; State Key Laboratory of Continental Dynamics, Northwest University in China ; State Key Laboratory of Continental Dynamics, Northwest University in China ; 40873007) ; 40873007) ; 40873007) ; 40873007) ; National Natural Science Foundation of China(41002011) ; National Natural Science Foundation of China(41002011) ; National Natural Science Foundation of China(41002011) ; National Natural Science Foundation of China(41002011) ; Chu(41172029 ; Chu(41172029 ; Chu(41172029 ; Chu(41172029 ; MOST(2011CB808805) ; MOST(2011CB808805) ; MOST(2011CB808805) ; MOST(2011CB808805) ; State Key Laboratory of Continental Dynamics, Northwest University in China ; State Key Laboratory of Continental Dynamics, Northwest University in China ; State Key Laboratory of Continental Dynamics, Northwest University in China ; State Key Laboratory of Continental Dynamics, Northwest University in China ; 40873007) ; 40873007) ; 40873007) ; 40873007)
源URL[http://ir.iggcas.ac.cn/handle/132A11/84746]  
专题中国科学院地质与地球物理研究所
通讯作者Chang, Hua-Jin
作者单位1.Qinghai Normal Univ, Sch Life & Geog Sci, Xining 810008, Qinghai, Peoples R China
2.Minist Educ China, Key Lab Tibetan Plateau Environm & Resources, Xining 810008, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
4.NW Univ Xian, State Key Lab Continental Dynam, Xian 710069, Peoples R China
推荐引用方式
GB/T 7714		 Chang, Hua-Jin,Chu, Xue-Lei,Feng, Lian-Jun,et al. Progressive oxidation of anoxic and ferruginous deep-water during deposition of the terminal Ediacaran Laobao Formation in South China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2012,321:80-87.
APA Chang, Hua-Jin,Chu, Xue-Lei,Feng, Lian-Jun,&Huang, Jing.(2012).Progressive oxidation of anoxic and ferruginous deep-water during deposition of the terminal Ediacaran Laobao Formation in South China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,321,80-87.
MLA Chang, Hua-Jin,et al."Progressive oxidation of anoxic and ferruginous deep-water during deposition of the terminal Ediacaran Laobao Formation in South China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 321(2012):80-87.

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来源：地质与地球物理研究所

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