中国科学院机构知识库网格系统: Redox condition during Ediacaran-Cambrian transition in the Lower Yangtze deep water basin, South China: constraints from iron speciation and delta C-13(org) in the Diben section, Zhejiang

Redox condition during Ediacaran-Cambrian transition in the Lower Yangtze deep water basin, South China: constraints from iron speciation and delta C-13(org) in the Diben section, Zhejiang

文献类型：期刊论文


作者	Yuan, Yuyang 1,2; Cai, Chunfang 1; Wang, Tiankai 1,2; Xiang, Lei 3; Jia, Lianqi 1,2; Chen, Yan 1,2
刊名	CHINESE SCIENCE BULLETIN
出版日期	2014-10-01
卷号	59 期号:28 页码:3638-3649
ISSN号	1001-6538
关键词	Diben section Yangtze area Ediacaran-Cambrian Iron speciation Redox
DOI	10.1007/s11434-014-0483-3
文献子类	Article
英文摘要	Cherts of the Piyuancun Formation and black mudstones of the Hetang Formation in Diben Town, Kaihua County, Zhejiang were deposited in a deep water basin of the Lower Yangtze area during the Ediacaran-Cambrian transition (E-C transition), offering an opportunity to reconstruct the ancient redox condition of the deep water basin. Total 53 samples were collected and analyzed for iron speciation, including pyrite iron (FePy), carbonate associated iron (FeCarb), iron oxide and hydroxide (FeOx), magnetite iron (FeMag) and total iron (FeT) as well as delta C-13(org) to gain a deeper understanding of specific redox condition during the period. The results show that (1) most samples have pyrite concentration < 1 %, with the FePy/FeHR ratio ranging from < 0.01 to 0.81 (mostly < 0.5), and the FeHR/FeT ratio between 0.39 and 0.93 (mostly > 0.5). (2) The E-C boundary in the Diben section occurred at the maximum negative excursion of organic carbon isotope within the Piyuancun Formation, which can be correlated with other sections by using delta C-13(org). We thus concluded that the relatively high content of highly reactive iron and low content of pyrite iron in the Diben section indicate a minor occurrence of H2S and a predominance of anoxic and ferruginous environment, which is similar to other reported sections such as the Longbizui and Yanwutan sections, western Hunan. In addition, oxygen concentration in sea water showed an increasing trend in the interval corresponding to the bottom and upper layer of the Hetang Formation as indicated by the FeHR/FeT ratio, which decreased from 0.7 to 0.38, however, it was not great enough to oxidize the whole deep water. Therefore, during the E-C transition deep water basin in South China was most likely an anoxic and ferruginous enrironment, which prevented metazoon from the evolution in the deep water basin. Our work offers an important reference to better understanding of the spatiotemporal occurrence and dynamic processes of the "Cambrian Explosion".
WOS关键词	PROTEROZOIC OCEAN CHEMISTRY ; ISOTOPE STRATIGRAPHY ; HETANG FORMATION ; MARINE BASIN ; BLACK SHALES ; EVOLUTION ; CARBON ; BOUNDARY ; PLATFORM ; SEAWATER
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000341837300017
资助机构	National Basic Research Program of China(2011CB808805) ; National Basic Research Program of China(2011CB808805) ; China National Funds for Distinguished Young Scientists(41125009) ; China National Funds for Distinguished Young Scientists(41125009) ; National Basic Research Program of China(2011CB808805) ; National Basic Research Program of China(2011CB808805) ; China National Funds for Distinguished Young Scientists(41125009) ; China National Funds for Distinguished Young Scientists(41125009) ; National Basic Research Program of China(2011CB808805) ; National Basic Research Program of China(2011CB808805) ; China National Funds for Distinguished Young Scientists(41125009) ; China National Funds for Distinguished Young Scientists(41125009) ; National Basic Research Program of China(2011CB808805) ; National Basic Research Program of China(2011CB808805) ; China National Funds for Distinguished Young Scientists(41125009) ; China National Funds for Distinguished Young Scientists(41125009)
源URL	[http://ir.iggcas.ac.cn/handle/132A11/85033]
专题	中国科学院地质与地球物理研究所
通讯作者	Cai, Chunfang
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resource Res, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geol Paleontol, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Yuyang,Cai, Chunfang,Wang, Tiankai,et al. Redox condition during Ediacaran-Cambrian transition in the Lower Yangtze deep water basin, South China: constraints from iron speciation and delta C-13(org) in the Diben section, Zhejiang[J]. CHINESE SCIENCE BULLETIN,2014,59(28):3638-3649.
APA	Yuan, Yuyang,Cai, Chunfang,Wang, Tiankai,Xiang, Lei,Jia, Lianqi,&Chen, Yan.(2014).Redox condition during Ediacaran-Cambrian transition in the Lower Yangtze deep water basin, South China: constraints from iron speciation and delta C-13(org) in the Diben section, Zhejiang.CHINESE SCIENCE BULLETIN,59(28),3638-3649.
MLA	Yuan, Yuyang,et al."Redox condition during Ediacaran-Cambrian transition in the Lower Yangtze deep water basin, South China: constraints from iron speciation and delta C-13(org) in the Diben section, Zhejiang".CHINESE SCIENCE BULLETIN 59.28(2014):3638-3649.

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来源：地质与地球物理研究所

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Redox condition during Ediacaran-Cambrian transition in the Lower Yangtze deep water basin, South China: constraints from iron speciation and delta C-13(org) in the Diben section, Zhejiang

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