陕西金粟山中奥陶统生物扰动构造与古环境分析

费安玮; 张忠涛

Volume 27 Issue 6

Jun. 2002

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Article Navigation > Earth Science > 2002 > 27(6): 703-710

FEI An-wei, ZHANG Zhong-tao, 2002. Bioturbation Structures and Paleoenvironment Analysis of the Middle Ordovician at Jinsushan, Shaanxi. Earth Science, 27(6): 703-710.

Citation:

FEI An-wei, ZHANG Zhong-tao, 2002. Bioturbation Structures and Paleoenvironment Analysis of the Middle Ordovician at Jinsushan, Shaanxi. Earth Science, 27(6): 703-710.

FEI An-wei, ZHANG Zhong-tao, 2002. Bioturbation Structures and Paleoenvironment Analysis of the Middle Ordovician at Jinsushan, Shaanxi. Earth Science, 27(6): 703-710.

Citation:

FEI An-wei, ZHANG Zhong-tao, 2002. Bioturbation Structures and Paleoenvironment Analysis of the Middle Ordovician at Jinsushan, Shaanxi. Earth Science, 27(6): 703-710.

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Bioturbation Structures and Paleoenvironment Analysis of the Middle Ordovician at Jinsushan, Shaanxi

Resources and Information Institute, University ofPetroleum, Beijing 102249

Received Date: 2002-08-31
Publish Date: 2002-11-25

Abstract

Abstract

Trace fossils and bioturbation structures were first discovered from the Middle Ordovician Badou Member of Fengfeng Formation and the Member 1 of Jinsushan Formation at Jinsushan, Shaanxi Province, sourthern margin of Ordos basin, where plentiful bioturbation structures are composed of unidentified species and genera and abundant stromatolites. The analysis of the characteristics and distribution of bioturbation structures, with stromatolites and sedimentology research and a method of semi-quantitative analysis for bioturbation structures enabled the authors to explain paleoenvironments of related formations. They suggest that there were three times of paleoenvironmental changes from the stromatolite-developing tidal flat to low energy open platform shallow sea enviroments, that is, three larger-scale fluctuations of sea level, during the Middle Ordovician Badou Member of Fengfeng Formation to the Member 1 of Jinsushan Formation.
- bioturbation structure,
- paleoenvironment,
- Middle Ordovician,
- Jinsushan,
- Ordos basin

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中国地质科学院金若谷研究员协助鉴定岩石薄片, 石油大学研究生甘军参加了部分野外工作, 谨致谢忱.

References(21)

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