Evidence of a large delta C-13(carb) and delta C-13(org) depth gradient for deep-water anoxia during the late Cambrian SPICE event | |
Li, Dandan1; Zhang, Xiaolin1; Hu, Dongping1; Chen, Xiaoyan1; Huang, Wei1; Zhang, Xu1; Li, Menghan1; Qin, Liping1; Peng, Shanchi (彭善池)2; Shen, Yanan1 | |
刊名 | GEOLOGY
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2018-07 | |
卷号 | 46期号:7页码:631-634 |
ISSN号 | 0091-7613 |
DOI | 10.1130/G40231.1 |
英文摘要 | The Upper Cambrian Steptoean Positive Carbon Isotope Excursion (SPICE, ca. 497 to 493 Ma) is characterized by a globally observed positive delta C-13 excursion of similar to 4% to 6%. Late Cambrian strata of South China, consisting of thick carbonate rocks with an excellent fossil record, provide key sedimentary successions for characterizing the SPICE and understanding its paleoenvironmental significance. Here we present high-resolution paired delta C-13 (carb) and delta C-13(org) data from three broadly regional late Cambrian (Furongian) sections that were deposited along a shelf margin-slope transect in South China. Our data exhibit an apparent paleobathymetry-dependent delta C-13(carb) and delta C-13(org) gradient, showing decreasing delta C-13 values with increasing water depth. The changes of delta C-13 in South China are in contrast to comparable facies-dependent delta C-13 data from the central Missouri (USA) intrashelf basin, which show increasing delta C-13 values with increasing water depth, but in a shallower paleoenvironmental system. The facies-dependent carbon-isotopic data from South China suggest enhanced burial rates of organic carbon, and may have important implications for understanding changes in paleo-redox conditions and their potential link to the mass extinction. |
WOS研究方向 | Geology |
语种 | 英语 |
出版者 | GEOLOGICAL SOC AMER, INC |
WOS记录号 | WOS:000436464200014 |
内容类型 | 期刊论文 |
源URL | [http://ir.nigpas.ac.cn/handle/332004/22610] ![]() |
专题 | 中国科学院南京地质古生物研究所 南京地质古生物研究所_其他 |
作者单位 | 1.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Anhui, Peoples R China; 2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Dandan,Zhang, Xiaolin,Hu, Dongping,et al. Evidence of a large delta C-13(carb) and delta C-13(org) depth gradient for deep-water anoxia during the late Cambrian SPICE event[J]. GEOLOGY,2018,46(7):631-634. |
APA | Li, Dandan.,Zhang, Xiaolin.,Hu, Dongping.,Chen, Xiaoyan.,Huang, Wei.,...&Shen, Yanan.(2018).Evidence of a large delta C-13(carb) and delta C-13(org) depth gradient for deep-water anoxia during the late Cambrian SPICE event.GEOLOGY,46(7),631-634. |
MLA | Li, Dandan,et al."Evidence of a large delta C-13(carb) and delta C-13(org) depth gradient for deep-water anoxia during the late Cambrian SPICE event".GEOLOGY 46.7(2018):631-634. |
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