Microfacies analysis of the Lower-Middle Ordovician succession at Xiangshuidong, southwestern Hubei Province, and the drowning and shelf-ramp transition of a carbonate platform in the Yangtze region
文献类型:期刊论文
作者 | Luan, Xiaocong (栾晓聪)1,2; Brett, Carlton E.3; Zhan, Renbin (詹仁斌)1,2; Liu, Jianbo4; Wu, Rongchang (吴荣昌)1; Liang, Yan (梁艳)1 |
刊名 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY |
出版日期 | 2017-11-01 |
卷号 | 485页码:68-83 |
ISSN号 | 0031-0182 |
关键词 | Cluster Analysis South China Marine Red Bed Gobe |
DOI | 10.1016/j.palaeo.2017.06.004 |
英文摘要 | During the Early-Middle Ordovician, the Yangtze Platform in South China was drowned, as indicated by the replacement of pure grey grainstones and packstones of the Hunghuayuan Formation by purple red, argillaceous limestone of the Zitai Formation and correlative units, which are mixed siliciclastic and carbonate deposits. The Xiangshuidong Section, located in Songzi City, southwestern Hubei Province, was selected to study the process in detail. Cluster analysis of point-count groups of the Hunghuayuan and the Zitai formations, indicates that the former contains six microfacies: MF-1 peloidal grainstone, MF-2 thrombolitic grainstone, MF-3 oolitic grainstone, MF-4 bioclastic grainstone, MF-5 lithoclastic grainstone, MF-6 interreef bioclastic grain-packstone, indicating a shelf setting before drowning, while the latter contains seven microfacies: MF-7 bioclastic grainstone, MF-8 bioclastic grain-to packstone, MF-9 bioclastic packstone, MF-10 bioclastic wackestone, MF-11 argillaceous bioclastic wackestone, MF-12 open-marine bioclastic wackestone, MF-13 calcimudstone, indicating the ramp setting during and after the drowning. The drowning was gradual and fluctuating, starting as a marginal shoal, through the inner ramp, and becoming a stable ramp setting. This drowning is mainly attributed to a global sea-level rise, and an increase of terrigenous supply that resulted from local tectonic movement (i.e. the initiation of collision between the South China and Cathaysia blocks). After drowning, red offshore marine fades were well developed along the platform margin, indicating an oxic sea bottom environment during the first acme of GOBE in South China. The changes in environments associated with this transition may have provided new evolutionary opportunities that contributed to the Middle Ordovician diversification. (C) 2017 Elsevier B.V. All rights reserved. |
WOS关键词 | Biodiversification Event Gobe ; South China ; Warm-temperate ; North China ; Basin ; Reefs ; Microtaphofacies ; Sea ; Unconformities ; Sedimentary |
资助项目 | National Natural Science Foundation of China (NSFC)[41521061] ; National Natural Science Foundation of China (NSFC)[41290260] ; National Natural Science Foundation of China (NSFC)[41672008] ; National Natural Science Foundation of China (NSFC)[J1210006] ; IGCP Project: the Onset of the Great Ordovician Biodiversification Event (GOBE)[653] |
WOS研究方向 | Physical Geography ; Geology ; Paleontology |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE BV |
WOS记录号 | WOS:000419747400006 |
资助机构 | National Natural Science Foundation of China (NSFC) ; IGCP Project: the Onset of the Great Ordovician Biodiversification Event (GOBE) |
源URL | [http://ir.nigpas.ac.cn/handle/332004/14085] |
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 中国科学院南京地质古生物研究所 |
通讯作者 | Luan, Xiaocong (栾晓聪) |
作者单位 | 1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Cincinnati, Dept Geol, Cincinnati, OH 45221 USA 4.Peking Univ, Sch Earth & Space Sci, Paleontol & Stratig, Beijing 100871, Peoples R China |
推荐引用方式 GB/T 7714 | Luan, Xiaocong ,Brett, Carlton E.,Zhan, Renbin ,et al. Microfacies analysis of the Lower-Middle Ordovician succession at Xiangshuidong, southwestern Hubei Province, and the drowning and shelf-ramp transition of a carbonate platform in the Yangtze region[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2017,485:68-83. |
APA | Luan, Xiaocong ,Brett, Carlton E.,Zhan, Renbin ,Liu, Jianbo,Wu, Rongchang ,&Liang, Yan .(2017).Microfacies analysis of the Lower-Middle Ordovician succession at Xiangshuidong, southwestern Hubei Province, and the drowning and shelf-ramp transition of a carbonate platform in the Yangtze region.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,485,68-83. |
MLA | Luan, Xiaocong ,et al."Microfacies analysis of the Lower-Middle Ordovician succession at Xiangshuidong, southwestern Hubei Province, and the drowning and shelf-ramp transition of a carbonate platform in the Yangtze region".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 485(2017):68-83. |
入库方式: OAI收割
来源:南京地质古生物研究所
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