Extinction pattern of reef ecosystems in latest Permian
文献类型：期刊论文
| 作者 | Wu YaSheng; Fan Jiasong; Jiang HongXia; Yang Wan |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2007-02-01 |
| 卷号 | 52期号:4页码:512-520 |
| 关键词 | end-Permian reef mass extinction Guizhou Permian-Triassic boundary |
| ISSN号 | 1001-6538 |
| DOI | 10.1007/s11434-007-0052-0 |
| 文献子类 | Article |
| 英文摘要 | Studies of two Permian-Triassic boundary (PTB) sections on top of a Changhsingian reef in Ziyun, Guizhou Province, southwestern China indicate that the end-Permian mass extinction of reef ecosystems occurred in two steps. The first step is the extinction of all stenotropic organisms such as calcisponges and fusulinids in the latest Permian (in the Clarkina yini conodont zone). The biota after the first extinction is simple, comprising eurytropic organisms including microgastropods, ostracods, and some small burrowing organisms, or only algal mats. At the beginning of the Early Triassic (i.e. the beginning of the Hindeodus parvus zone), the environments became anoxic, and the microgastropod dominated biota or algal mats disappeared, which constituted the second episode of the mass extinction. The blota after the second extinction comprises small spherical microproblematica, some kinds of specialized organisms tolerant of anoxic or oxygen-poor conditions. As the environments became oxygenated, the specialized biota was replaced by a microgastropod-dominated simple biota. When the environmental conditions improved further, the simple biota was replaced by a diverse biota with normal-sized ammonoids, bivalves, and gastropods, representing restoration of normal oceanic conditions. Comparison with PTB sections in Dolomites, Italy and Meishan, Zhejiang Province shows that non-reef ecosystems had a similar first episode of mass extinction in the latest Permian. In the case that oceanic anoxia happened, non-reef ecosystems had a second extinction episode similar. to that of reef ecosystems. |
| WOS关键词 | TRIASSIC BOUNDARY INTERVAL ; GLOBAL STRATOTYPE SECTION ; MASS EXTINCTION ; SOUTH CHINA ; PALEOENVIRONMENTAL SIGNIFICANCE ; OCEANIC CONDITIONS ; NANPANJIANG BASIN ; SICHUAN PROVINCE ; MARINE ; CRISIS |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000245837700014 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/68320]  |
| 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.Wichita State Univ, Dept Geol, Wichita, KS 67260 USA |
| 推荐引用方式 GB/T 7714 | Wu YaSheng,Fan Jiasong,Jiang HongXia,et al. Extinction pattern of reef ecosystems in latest Permian[J]. CHINESE SCIENCE BULLETIN,2007,52(4):512-520. |
| APA | Wu YaSheng,Fan Jiasong,Jiang HongXia,&Yang Wan.(2007).Extinction pattern of reef ecosystems in latest Permian.CHINESE SCIENCE BULLETIN,52(4),512-520. |
| MLA | Wu YaSheng,et al."Extinction pattern of reef ecosystems in latest Permian".CHINESE SCIENCE BULLETIN 52.4(2007):512-520. |
入库方式： OAI收割
来源：地质与地球物理研究所
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