KMS Nanjing Institute of Geology and Palaeonotology,CAS
Arenig trilobite associations and faunal changes in Southern Shaanxi, China | |
Turvey, ST; Zhou, ZY (周志毅) | |
2004-03-01 | |
发表期刊 | JOURNAL OF ASIAN EARTH SCIENCES
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ISSN | 1367-9120 |
卷号 | 23期号:1页码:91-103 |
摘要 | Stratigraphic ranges of 22 Ordovician trilobite taxa are recorded across the Chaochiapa and Siliangssu formations (Arenig) at two localities in southern Shaanxi, representing shelf facies close to the northwestern margin of the Yangtze Platform, with additional material recorded from two spot-sampling localities in the same region. These are assigned to at least three benthic trilobite associations: a deep inner shelf Neseuretus Association, occurring in elastic facies, and outer shelf Trinucleid and Nileid-Asaphid associations, occurring in clastic-carbonate and carbonate facies, respectively. The occurrence of a possible fourth association, a Taihungshania Association apparently occurring in shallow inner shelf clastic facies, is also suggested. Stratigraphic occurrence of these associations at the collection localities is interpreted as reflecting the Arenig transgression. Although many of the recorded trilobite species are widespread across the Yangtze Platform during the Arenig, most of the benthic associations recognized herein are restricted to southern Shaanxi. The sediments in this region are interpreted as having been deposited under slightly shallower palaeobathymetric conditions than those in western Hubei during the Arenig, although an older record of a cyclopygid trilobite from the Siliangssu Formation may challenge this idea. (C) 2003 Elsevier Ltd. All rights reserved. |
关键词 | Palaeoecology Neseuretus Trinucleid Yangtze Platform Ordovician |
DOI | 10.1016/S1367-9120(03)00098-1 |
语种 | 英语 |
关键词[WOS] | Ordovician Trilobites |
WOS研究方向 | Geology |
WOS类目 | Geosciences, Multidisciplinary |
WOS记录号 | WOS:000220343400007 |
出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
文献类型 | 期刊论文 |
条目标识符 | http://ir.nigpas.ac.cn/handle/332004/990 |
专题 | 中国科学院南京地质古生物研究所 其他 |
通讯作者 | Turvey, ST |
作者单位 | 1.Univ Oxford, Dept Earth Sci, Oxford OX1 3PR, England 2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China |
推荐引用方式 GB/T 7714 | Turvey, ST,Zhou, ZY . Arenig trilobite associations and faunal changes in Southern Shaanxi, China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2004,23(1):91-103. |
APA | Turvey, ST,&Zhou, ZY .(2004).Arenig trilobite associations and faunal changes in Southern Shaanxi, China.JOURNAL OF ASIAN EARTH SCIENCES,23(1),91-103. |
MLA | Turvey, ST,et al."Arenig trilobite associations and faunal changes in Southern Shaanxi, China".JOURNAL OF ASIAN EARTH SCIENCES 23.1(2004):91-103. |
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