Spatial variation of carbon isotopic compositions of carbonate and organic matter from the Late Ordovician sedimentary succession in the Yangtze Platform, South China: Implications for sea - Level eustacy and shoaling of marine chemocline
文献类型：期刊论文
| 作者 | Yang, Xiangrong2; Yan, Detian2; Chen, Daizhao1; Liu, Mu1; She, Xiaohui2; Zhang, Junfeng2; Wei, Xiaosong2; Lu, Zeyu2 |
| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2020-10-15 |
| 卷号 | 202页码:13 |
| ISSN号 | 1367-9120 |
| 关键词 | Inorganic carbon isotope Organic carbon isotope Wufeng Formation Black shale Late Ordovician |
| DOI | 10.1016/j.jseaes.2020.104540 |
| 英文摘要 | Spatial correlation of isotopic chemostratigraphy across ancient epeiric basins is of particular interest in the field of geology. This study examines the carbon isotopic compositions of carbonate and organic matter from the Late Ordovician sedimentary succession in the Yangtze Platform, including the Linxiang (LX) Formation deposited in the bottom and the Tiezufeike (TZFK)/Daduhe (DDH)/Wufeng (WF) formations in the top. Paired delta C-13(carb) and delta C-13(org) analyses of the Upper Ordovician strata on the Yangtze Platform were recorded, and the results show that the rocks in the LX Formation have high delta C-13(carb) and delta C-13(org) values relative to those in the DDF/TZFK/WF formations. Additionally, a variation of similar to 29 parts per thousand was found between shallow- and deep- water settings during the Late Ordovician: heavier delta C-13(carb) and delta C-13(org), values are observed at the Wukemuchang (WKMC) and Wanhe (WH) sections, representing the shallow regions of the Yangtze Platform, relative to the Tianjiawan (TJW) and Tianba (TB) sections representing the deeper margin of the Yangtze Platform. We suggest that the variations of delta C-13 in carbonate and organic matter are related to the sea - level eustacy and shoaling of marine chemocline: (1) sea - level rise driven decrease in local scale carbonate weathering; (2) decreased decomposition of organic matter under anoxic conditions; and (3) incorporation of non - photosynthetic chemoautorophic bacteria living in deeper waters. The Delta C-13 (Delta C-1(3) = delta C-13(carb) - delta C-13(org)) values in both the WH and WKMC sections display an increasing trend upward from the LX Formation to the overlying strata, varying from 27.8 parts per thousand to 31.2 parts per thousand and from 28.1 parts per thousand to 31.1 parts per thousand, respectively. These increased Delta C-13 values are related to the enhanced nutrients and correspondingly high primary productivity, and thus that, the anoxic water conditions and high primary productivity may be the significant factors in the deposition of Late Ordovician black shales. |
| WOS关键词 | DELTA-C-13(CARB) ; BOUNDARY ; GLACIATION ; DIAGENESIS ; NITROGEN ; BASIN ; CO2 |
| 资助项目 | Natural Science Foundation of China[41690131] ; Natural Science Foundation of China[41572327] ; Natural Science Foundation of Hubei Province[2019CFA028] ; Fundamental Research Funds for National Universities, China University of Geosciences (Wuhan) |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000577310800002 |
| 资助机构 | Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of Hubei Province ; Natural Science Foundation of Hubei Province ; Fundamental Research Funds for National Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for National Universities, China University of Geosciences (Wuhan) ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of Hubei Province ; Natural Science Foundation of Hubei Province ; Fundamental Research Funds for National Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for National Universities, China University of Geosciences (Wuhan) ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of Hubei Province ; Natural Science Foundation of Hubei Province ; Fundamental Research Funds for National Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for National Universities, China University of Geosciences (Wuhan) ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of Hubei Province ; Natural Science Foundation of Hubei Province ; Fundamental Research Funds for National Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for National Universities, China University of Geosciences (Wuhan) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/98306]  |
| 专题 | 地质与地球物理研究所_中国科学院油气资源研究重点实验室 |
| 通讯作者 | Yan, Detian |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 2.China Univ Geosci, Key Lab Tecton & Petr Resources, Minist Educ, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Xiangrong,Yan, Detian,Chen, Daizhao,et al. Spatial variation of carbon isotopic compositions of carbonate and organic matter from the Late Ordovician sedimentary succession in the Yangtze Platform, South China: Implications for sea - Level eustacy and shoaling of marine chemocline[J]. JOURNAL OF ASIAN EARTH SCIENCES,2020,202:13. |
| APA | Yang, Xiangrong.,Yan, Detian.,Chen, Daizhao.,Liu, Mu.,She, Xiaohui.,...&Lu, Zeyu.(2020).Spatial variation of carbon isotopic compositions of carbonate and organic matter from the Late Ordovician sedimentary succession in the Yangtze Platform, South China: Implications for sea - Level eustacy and shoaling of marine chemocline.JOURNAL OF ASIAN EARTH SCIENCES,202,13. |
| MLA | Yang, Xiangrong,et al."Spatial variation of carbon isotopic compositions of carbonate and organic matter from the Late Ordovician sedimentary succession in the Yangtze Platform, South China: Implications for sea - Level eustacy and shoaling of marine chemocline".JOURNAL OF ASIAN EARTH SCIENCES 202(2020):13. |
入库方式： OAI收割
来源：地质与地球物理研究所
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