Oceanic redox condition during the late Ediacaran (551-541 Ma), South China
文献类型：期刊论文
| 作者 | Fan, Haifeng1,3; Wen, Hanjie1,2; Han, Tao1; Zhu, Xiangkun3; Feng, Lianjun4; Chang, Huajin5 |
| 刊名 | GEOCHIMICA ET COSMOCHIMICA ACTA
 |
| 出版日期 | 2018-10-01 |
| 卷号 | 238页码:343-356 |
| 关键词 | Late Ediacaran Ocean Fe and S isotopes Ferruginous condition Intermittent euxinia |
| ISSN号 | 0016-7037 |
| DOI | 10.1016/j.gca.2018.07.014 |
| 英文摘要 | The late Ediacaran (551-541 Ma) oceanic environment could represent a significant preparation for the enrichment of redox sensitive elements during the early Cambrian and even for the evolution of life. However, the marine environment dur-ing the late Ediacaran has not been thoroughly characterized to date. To better understand late Ediacaran oceanic redox conditions, we investigated the Fe and S isotopic compositions of cherts from the slope (Yinjiang) and basin (Silikou) sections of the Nanhua basin in South China. The slope (Yinjiang) section is characterized by a wide range of delta Fe-56(T) values (-0.12 parts per thousand to 1.06 parts per thousand) and by continuously decreasing delta S-34(py) values from 40.4 parts per thousand to 4.1 parts per thousand. The variable delta Fe-56(T) values in the Yinjiang section primarily reflect the various oxidation degrees of dissolved Fe2+ in ferruginous seawater. The homogeneous delta Fe-56(T) signatures (0.02-0.40 parts per thousand) along the Silikou section and the decreasing trend of delta Fe-56(HR) values from 0.86 parts per thousand to near zero primarily depend on the mixing of Fe3+ hydroxide/oxide precipitates in a ferruginous water column, possibly followed by partial reduction, the authigenic framboidal pyrite trapped within an intermittent euxinic condition and detrital silicate Fe minerals. A 20-30%e discrepancy in delta S-34(py) values between the Yinjiang and Silikou sections may be ascribed to the formation of diagenetic pyrites and framboidal pyrites, respectively. Therefore, the continuously decreasing delta S-34(py) values in the Yinjiang and Silikou sections may reflect a significant increase of sulfate diffusion into sediments at the slope location and the enlarged marine sulfate reservoir at the basin location. These new results indicate that the deep water in the Nanhua basin is primarily characterized by a ferrug- inous condition with intermittent euxinic conditions in the basin location during the late Ediacaran. (C) 2018 Elsevier Ltd. All rights reserved. |
| WOS关键词 | FE ISOTOPE FRACTIONATION ; FERRUGINOUS DEEP-WATER ; BANDED IRON-FORMATION ; BILLION YEARS AGO ; CAMBRIAN TRANSITION ; TERMINAL EDIACARAN ; LAOBAO FORMATION ; PROTEROZOIC OCEAN ; EARLY DIAGENESIS ; ARCHEAN OCEAN |
| 资助项目 | Chinese Academy of Sciences[XDB18000000] ; National Basic Research Program of China[2014CB440906] ; National Natural Science Foundation of China[41573011] ; National Natural Science Foundation of China[41673053] ; Youth Innovation Promotion Association CAS ; CAS "Light of West China" Program |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000441893500019 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Basic Research Program of China ; National Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Basic Research Program of China ; National Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Basic Research Program of China ; National Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Basic Research Program of China ; National Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS "Light of West China" Program ; CAS "Light of West China" Program |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/88132]  |
| 专题 | 地质与地球物理研究所_科技支撑系统 |
| 通讯作者 | Fan, Haifeng |
| 作者单位 | 1.Chinese Acad Sci, Inst Geochem, State Key Lab Ore Deposit Geochem, Guiyang 550081, Guizhou, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Geol Sci, Inst Geol, MNR Key Lab Deep Earth Dynam, MNR Key Lab Isotope Geol, Beijing 100037, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 5.Hubei Univ Arts & Sci, Sch Geosci, Xiangyang 441053, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, Haifeng,Wen, Hanjie,Han, Tao,et al. Oceanic redox condition during the late Ediacaran (551-541 Ma), South China[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2018,238:343-356. |
| APA | Fan, Haifeng,Wen, Hanjie,Han, Tao,Zhu, Xiangkun,Feng, Lianjun,&Chang, Huajin.(2018).Oceanic redox condition during the late Ediacaran (551-541 Ma), South China.GEOCHIMICA ET COSMOCHIMICA ACTA,238,343-356. |
| MLA | Fan, Haifeng,et al."Oceanic redox condition during the late Ediacaran (551-541 Ma), South China".GEOCHIMICA ET COSMOCHIMICA ACTA 238(2018):343-356. |
入库方式： OAI收割
来源：地质与地球物理研究所
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