Sea-level drops in the Permian-Triassic boundary section at Laolongdong, Chongqing, Sichuan province
文献类型：期刊论文
| 作者 | Wu YaSheng; Jiang HongXia; Liao TaiPing |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2006-09-01 |
| 卷号 | 22期号:9页码:2405-2412 |
| 关键词 | Permian-Triassic boundary end-Permian sea-level change erosional surface Sichuan |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | Restudy of the Permian-Triassic boundary section at Laolongdong, Chongqing, Sichuan Province, south China shows evidence for sea-level drops. This section comprises a basal Changhsingian calcisponge limestone of normal shallow-water condition. It is overlain by 10.6 m thick packstone of platform facies. The latter is covered by 1.4 m thick lime mudstone and packstone of restricted platform facies, which is characterized by speckled appearance. The top of this interval is an undulated ancient karstic surface. This surface is coated by a 1 mm thick layer of terrestrial clasts of quartz, feldspar, and clay minerals. The overlying 0.8 m thick packstone and lime mudstone has a characteristic dendroid appearance. This unit has a more remarkable erosional top surface. The height difference of the undulated surface at least reaches 0.3 m. The lentiform deposits in the lower areas of the surface are bedded grainstone composed of microgastropods cemented by fibrous calcite. The horizontal beddings of the grainstone are intersected with the erosional surface. The grainstone is overlain by a thin layer of packstone of small bivalves. The above rock is caesious tabular marly lime mudstone containing abundant small syndepositional pebbles 0.3 similar to 3 mm wide, which are internally recrystallined. |
| WOS关键词 | MASS EXTINCTION ; SOUTH CHINA ; MICROBIALITE MICROSTRUCTURES ; OCEANIC CONDITIONS ; ABADEH SECTION ; HUAYING AREA ; INTERVAL ; MEGASTRUCTURES ; IRAN |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000242107400017 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/67134]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Wu YaSheng |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chongqing Univ Sci & Technol, Chongqing 400042, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu YaSheng,Jiang HongXia,Liao TaiPing. Sea-level drops in the Permian-Triassic boundary section at Laolongdong, Chongqing, Sichuan province[J]. ACTA PETROLOGICA SINICA,2006,22(9):2405-2412. |
| APA | Wu YaSheng,Jiang HongXia,&Liao TaiPing.(2006).Sea-level drops in the Permian-Triassic boundary section at Laolongdong, Chongqing, Sichuan province.ACTA PETROLOGICA SINICA,22(9),2405-2412. |
| MLA | Wu YaSheng,et al."Sea-level drops in the Permian-Triassic boundary section at Laolongdong, Chongqing, Sichuan province".ACTA PETROLOGICA SINICA 22.9(2006):2405-2412. |
入库方式： OAI收割
来源：地质与地球物理研究所
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