| 鄂尔多斯盆地南部地区的加里东运动 |
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| 引用本文： | 袁卫国,王平.鄂尔多斯盆地南部地区的加里东运动[J].地球科学与环境学报,1996(1). |
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| 作者姓名： | 袁卫国 王平 |
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| 作者单位： | 地矿部华北石油局第三普查大队，西安地质学院资源系 |
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| 摘 要： | 鄂尔多斯盆地南部地区加里东运动的形变特征主要有三种表现形式：即在盆缘地带形成较宽缓褶皱、逆冲推覆构造，上、下古生界呈角度不整合接触，并构成具造山性质的加里东构造带；向盆地内部依次为和缓隆起、高角度断裂，中、下奥陶统不同层位与上覆上古生界不同层位呈微角度不整合接触；整体抬升，下奥陶统与石炭系不同层位呈平行不整合接触。加里东运动形成于奥陶纪晚期，可再细分为两期，分别与北秦岭构造带早古生代的弧－陆碰撞与陆－陆碰撞作用有关。
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| 关 键 词： | 鄂尔多斯盆地 加里东运动 变形特征 形成时期 运动性质 |
ON THE CALEDONIAN MOVEMENT IN THE SOUTHERN EERDUOS BASIN |
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| Yuan Weiguo, Wang Ping.ON THE CALEDONIAN MOVEMENT IN THE SOUTHERN EERDUOS BASIN[J].Journal of Earth Sciences and Environment,1996(1). |
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| Authors: | Yuan Weiguo Wang Ping |
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| Abstract: | The deformation characteristics of Caledonian movement in the Southern Part of the Eerduos Basin show mainly three manifestations: Forming relatively open folds, thrust nappe structures, angular unconformity between upper and lower Paleozoic Groups, and constituting the Caledonian Structure Zone with orogeny in the basin margin belt. To the basin inside successively, forming moderate upwarps, high angle faults, microangular unconformity between middle-lower Ordovician and upper Paleozoic Groups; and Whole massifarised, parallel unconformity between lower Ordovician and upper Paleozoic Groups. The Caledonian movement took place in late Ordovician and may be divided into two phases, corresponding to arc-continent collision and continent-continent collision in the North Qinling orogenic belt during early Paleozoic Era respectively. |
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| Keywords: | Eerduos Basin Caledonian movement deformational characteristics formation period movement property |
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