KMS Nanjing Institute of Geology and Palaeonotology,CAS
Onshore migration of a deep-water brachiopod fauna from the Lower Ordovician Tonggao Formation, Jiangnan Slope, southeastern Guizhou Province, South China | |
Zhan, Renbin (詹仁斌)1![]() | |
2008-02-01 | |
发表期刊 | CANADIAN JOURNAL OF EARTH SCIENCES
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ISSN | 0008-4077 |
卷号 | 45期号:2页码:141-157 |
摘要 | Brachiopods from the lower Tonggao Formation (Floian, late Early Ordovician) of Sandu, southeastern Guizhou Province, represent a deep-water benthic shelly fauna from the Jiangnan Slope facies of the South China paleoplate. The fauna contains 16 brachiopod taxa, with orthides, lingulates, and pentamerides being the common groups. Concurrent graptolites confine the brachiopod fauna to the Tetragraptus approximatus and the Acrograptus filiformis biozones (early Floian). The first appearance datum (FAD) of several brachiopod genera, such as Paralenorthis, Protoskenidioides, and Nereidella, in the Sandu slope facies is one or two graptolitic biozones lower than their FAD in shallower water facies on the Yangtze Platform. Later in the late Floian, these genera became major components of the Sinorthis fauna that flourished over much of the Yangtze Platform, suggesting a migration of the benthic shelly fauna from slope to platform facies during the Floian radiation in South China. Compared to the platform fauna, the deep-water brachiopod fauna of the Sandu area has a lower level of richness, diversity, and community organization. Three brachiopod associations are recognized: the Paralenorthis-Nereidella, the Palaeoglossa longa, and the Lingulella-Protoskenidioides associations. An upsection decrease in shell size, faunal richness, and species diversity in the Tonggao Formation indicate a deteriorating environment towards hypersalinity in the Sandu area, resulting in the ultimate disappearance of the deep-water brachiopod fauna. |
DOI | 10.1139/E07-043 |
语种 | 英语 |
关键词[WOS] | Communities ; Patterns |
WOS研究方向 | Geology |
WOS类目 | Geosciences, Multidisciplinary |
WOS记录号 | WOS:000255672000005 |
出版者 | CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS |
文献类型 | 期刊论文 |
条目标识符 | http://ir.nigpas.ac.cn/handle/332004/119 |
专题 | 中国科学院南京地质古生物研究所 其他 |
通讯作者 | Zhan, Renbin (詹仁斌) |
作者单位 | 1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 2.Univ Western Ontario, Dept Earth Sci, London, ON N6A 5B7, Canada |
第一作者单位 | 中国科学院南京地质古生物研究所 |
通讯作者单位 | 中国科学院南京地质古生物研究所 |
推荐引用方式 GB/T 7714 | Zhan, Renbin ,Jin, Jisuo. Onshore migration of a deep-water brachiopod fauna from the Lower Ordovician Tonggao Formation, Jiangnan Slope, southeastern Guizhou Province, South China[J]. CANADIAN JOURNAL OF EARTH SCIENCES,2008,45(2):141-157. |
APA | Zhan, Renbin ,&Jin, Jisuo.(2008).Onshore migration of a deep-water brachiopod fauna from the Lower Ordovician Tonggao Formation, Jiangnan Slope, southeastern Guizhou Province, South China.CANADIAN JOURNAL OF EARTH SCIENCES,45(2),141-157. |
MLA | Zhan, Renbin ,et al."Onshore migration of a deep-water brachiopod fauna from the Lower Ordovician Tonggao Formation, Jiangnan Slope, southeastern Guizhou Province, South China".CANADIAN JOURNAL OF EARTH SCIENCES 45.2(2008):141-157. |
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