| 西藏札达县姜叶玛的二叠系 |
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| 引用本文： | 王全海,徐仲勋,吴瑞忠.西藏札达县姜叶玛的二叠系[J].成都理工大学学报(自然科学版),1988(2). |
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| 作者姓名： | 王全海 徐仲勋 吴瑞忠 |
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| 作者单位： | 西藏地矿局区域地质调查大队
(王全海，徐仲勋)，成都地质学院(吴瑞忠) |
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| 摘 要： | 本文首次列出西藏札达县姜叶玛二叠纪地层,古生物剖面,对该剖面进行了地层划分及时代讨论;建立了上二叠统姜叶玛组和下二叠统西兰塔组;简述了雅鲁藏布江沿线二叠系的分布特点、生物群特征、古地理概况以及地质意义。否定了雅鲁藏布江沿线二叠纪的灰岩块体“由北方远处推来的外来岩块或飞来峰”的说法。
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| 关 键 词： | 西藏 二叠系 生物群 古地理 飞来峰 |
PERMIAN SYSTEM IN GYAINYIMA DISTRICT OF ZHADA, XIZANG (TIBET) |
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| Wang Quanhai,Xu Zhongxun,Wu Ruizhong Xizang Bureau of Geology and Mineral Resources Chengdu College of Geology.PERMIAN SYSTEM IN GYAINYIMA DISTRICT OF ZHADA, XIZANG (TIBET)[J].Journal of Chengdu University of Technology: Sci & Technol Ed,1988(2). |
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| Authors: | Wang Quanhai Xu Zhongxun Wu Ruizhong Xizang Bureau of Geology and Mineral Resources Chengdu College of Geology |
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| Institution: | Wang Quanhai;Xu Zhongxun;Wu Ruizhong Xizang Bureau of Geology and Mineral Resources Chengdu College of Geology |
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| Abstract: | A biostratigraphic profile has been firstly described for the Permianstrata of Gyainyima. The Upper Permian Gyainyima Formation (P_(2?))and the Lower Permian Xilanta Formation (P_(1x)) were established.Development of Permian sequence along the Yarlungzangbo River is alsodiscussed in respect of its spatial distribution, biological assemblage,paleogeographic features and geological significance. The previousopinion that the Permian limestone mass was consisted of exotic blockspushed from north through a nappe process has been refuted. |
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| Keywords: | Xizang (Tibet) Permian System biocenosis paleogeography nappe outlier |
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