Feature and significance of Indosinian movement in Qingyang-Jingxian areas,southern margin of front land zone in the middle and lower course of Yangtze River
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摘要: 长江中下游前陆带南缘安徽省青阳—泾县一带的印支运动表现为一系列连续的不同变形形式的构造运动。印支主褶皱前发生了重要的挤压拆离构造 ,主褶皱后发生了广泛的逆冲 (南部 )和重力滑动 (北缘 )构造。 3个变形阶段是同一区域应力场持续作用下的连续过程 ,形成挤压拆离—褶皱—重力滑动构造系统 ,是褶皱带前缘和山前带典型变形组合 ,表明本区北部为江南褶皱带山前带。Abstract: A series of tectonic movement of various deformations happened during Indosinian in Qingyang-Jingxian areas, southern margin of front land zone in the middle and lower course of Yangtze River. Press detachment tectonic movement happened and was of great importance,after that,the major fold in Indo Chinese epoch was formed, then a great deal of thrusting (at southern margin) and gravity slide ( at northern margin) movement followed. The three deformationes happened continuously under the continuous effect of the same stress field to form a tectonic system of press detachment, fold and gravity slide, namely a typical deformation combination of front margin of fold zone and front margin of mountain, which show that the north part of the areas is the front zone of mountain of south part of Yangtze fold zone.
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Key words:
- Indosinian /
- press detachment /
- gravity slide /
- deformation of front zone of mountain
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[1] 安徽省地矿局.安徽省区域地质志[M].北京:地质出版社,1987.
[2] BOYER S E.Styles of folding within thrust sheets:examples from the Appalachian and Rocky Mountains of the U.S.A and Canada[J].J.Struct.Geol.,1986,8(3-4):325-339.
[3] RAMSAY J G and HUBER M I.徐树桐译.现代构造地质学方法(第二卷,褶皱和断裂)[M].北京:地质出版社,1991.
[4] VANN I R,GRAHAM R H and HAYWARD A B.The Structure of mountain fronts[J].J.Struct.Geol.,1986,8(3-4):215-237.
[5] 罗庆坤,姜大志,刘国生.中下扬子区区域性的伸展拉覆断层及其褶皱[A].见:现代地质学研究文集[C].1992,147-156.
[6] 徐备,郭令智,施央申.皖浙赣地区元古代地体和多期碰撞造山带[M].北京:地质出版社,1992.
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