| 玉树构造带北缘下三叠统底界不整合面的发现及其构造意义 |
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| 引用本文： | 张以茀.玉树构造带北缘下三叠统底界不整合面的发现及其构造意义[J].青海国土经略,1994(1). |
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| 作者姓名： | 张以茀 |
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| 作者单位： | 青海省区调综合地质大队 |
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| 摘 要： | 位于玉树县东偏南约200km处三岔河(四川省境内),北东方位的雅砻江南岸,发现巴颜喀拉地层区的下三叠统不整合在玉树构造带的下二叠统碎屑岩和火山岩的沉积岩层之上;从而肯定了玉树构造带上华力西褶皱基底的存在,为该带早二叠世和晚三叠世两期裂陷槽的成生发展、以及巴颜喀拉三叠纪内陆海沉积盆地的属性提供了论证依据。
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| 关 键 词： | 不整合面 下三叠统 玉树构造带 |
DISCOVERY OF THE UNCONFORMITY PLANE BELOW LOWER TRIASIC IN THE NORTH MARGIN OF YUSHU TECTONIC ZONE AND ITS TECTONIC SIGNIFICANCE |
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| Authors: | Zang Yifu Regional surveying and synthetic geological team Qinghai |
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| Abstract: | The lower Triassic series of Bayankala area is found unconformably above thelower, Permian clastic rock and volcanic beds in Yushu tectonic zone,located at the south bank ofYalong river, 200km east-south of Yushu county. Variscan folding basement of Yushu tectoniczone is therefore proved and the demonstrative basis is provided to study the origin and develop-ment of two rift geosynclines in early Permian and late Triassic of this zone,and the sedimentarybasin characteristics of Triassic continental sea. |
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| Keywords: | Unconformity plane Lower Triassic Yushu tectonic zone |
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