Evidence for sea-level falls in the Permian-Triassic transition in the Ziyun area, South China
文献类型：期刊论文
| 作者 | Wu Ya-Sheng; Jiang Hong-Xia; Fan Jia-Song |
| 刊名 | GEOLOGICAL JOURNAL
 |
| 出版日期 | 2010-03-01 |
| 卷号 | 45期号:2-3页码:170-185 |
| 关键词 | Permian-triassic Boundary P-t Transition Subaerial Exposure Sea-level Fall End-permian Ziyun Reef |
| ISSN号 | 0072-1050 |
| DOI | 10.1002/gj.1168 |
| 文献子类 | Article |
| 英文摘要 | The sedimentology of three sections showing the Permian Triassic (P T) transition on an Upper Permian reef in Ziyun, Guizhou Province, southwest China provides evidence of sea-level fall in this area. The P T transition in the Gendan section, which covers a reef-front sequence, contains a subaerial exposure surface and various desiccation cracks (including rolled-up chips, in-chip cracks, pyramid cracks, vertical cracks and sheet cracks), indicating sea-level falls. The P T transition in the Shitouzhai section, which covers a reef-core sequence, contains three micritic beds with abundant pseudomorphs of tabular gypsum crystals replaced by calcite. The underlying centimetres of deposits are composed of fine-crystalline dolostone, and have a sharp contact with the underlying reef-core facies. The association of gypsum pseudomorphs and fine-crystalline dolostone suggests an origin related to a supratidal evaporative environment. The P T transition in the Tanluzhai section, which covers a back-reef sequence, is fine-crystalline dolostone, and shows a laminated algal structure indicating tidal-flat environments. The middle part of the dolostone interval has become a collapse breccia composed of dolostone fragments and a matrix of micrites or crustose multi-generation calcite cements. The formation of the collapse breccia is interpreted to be related to the dissolution of the evaporite interbeds originally present between the thin dolostone beds. The formation of the evaporite deposits requires a supratidal condition. Copyright (C) 2009 John Wiley & Sons, Ltd. |
| WOS关键词 | MARINE CARBONATE PLATFORMS ; GLOBAL STRATOTYPE SECTION ; MASS EXTINCTION ; BOUNDARY INTERVAL ; NANPANJIANG BASIN ; ABADEH SECTION ; OCEANIC CONDITIONS ; SICHUAN PROVINCE ; GREAT BANK ; PART 1 |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000277993200005 |
| 出版者 | JOHN WILEY & SONS LTD |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/72774]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Wu Ya-Sheng |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu Ya-Sheng,Jiang Hong-Xia,Fan Jia-Song. Evidence for sea-level falls in the Permian-Triassic transition in the Ziyun area, South China[J]. GEOLOGICAL JOURNAL,2010,45(2-3):170-185. |
| APA | Wu Ya-Sheng,Jiang Hong-Xia,&Fan Jia-Song.(2010).Evidence for sea-level falls in the Permian-Triassic transition in the Ziyun area, South China.GEOLOGICAL JOURNAL,45(2-3),170-185. |
| MLA | Wu Ya-Sheng,et al."Evidence for sea-level falls in the Permian-Triassic transition in the Ziyun area, South China".GEOLOGICAL JOURNAL 45.2-3(2010):170-185. |
入库方式： OAI收割
来源：地质与地球物理研究所
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