| 皖中地区深层构造分析 |
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| 引用本文： | 刘德良,李秀新.皖中地区深层构造分析[J].地质科学,1984,0(1):42-50. |
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| 作者姓名： | 刘德良 李秀新 |
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| 作者单位： | 1. 中国科技大学地球和空间科学系;2. 安徽省石油勘探指挥部 |
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| 摘 要： | 通过对地球物理场特征与不同层次地质体之间对应关系的分析,可以探讨深层构造的演化。本文根据对重力和磁力场数据处理的结果,研究皖中地区地壳上部的层块结构和滑脱构造。
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| 关 键 词： | , |
| 收稿时间： | 1979-09-12 |
| 修稿时间： | 1979-09-12; |
DEEP STRUCTURAL ANALYSIS IN CENTRAL ANHUI |
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| Liu Deliang,Li Xiuxin.DEEP STRUCTURAL ANALYSIS IN CENTRAL ANHUI[J].Chinese Journal of Geology,1984,0(1):42-50. |
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| Authors: | Liu Deliang Li Xiuxin |
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| Institution: | 1. Department of Earth and Space, Chinese University of Science and Technology, Hefei;2. Headquarters for Petroleum Prospecting, Anhui Province |
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| Abstract: | By analysing the relations between the features of geophysical field and geologic body of the different levels,the evolution of deep structures may be explored.Based on the data computation of gravitational and magnetic fields,this paper discusses the problems of stratified block structure and slipping tectonics of the upper crust in central Anhui.The central Anhui is a transitional region between the three principal tectonic units of East China,of which the north belongs to the tectonic region of North China,the soutk to the Qinling-Dabie tectonic region and the east to the Yangtze tectonic region.The upper crust in this area may be divided into three basic structural strata and three corresponding main control structures.The lower structural stratum is 10000 m thick and the trend is mainly in SN direction; the middle one is 5000 m thick and mainly in EW direction; the upper one is 3000 m thick and in NNE direction.The structural strato-blocks limited by the boundary faults of the tectonic units and the faults between structural strata,including inner part of the structural strato-blocks and its bounds,have undergone a unified deformation related to each other.Both the thrust between the structural strata and the reversal of the upper boundary faults of the tectonic area are accompanied by nappe structure.The crust movement of this region,including the lower structural stratum of North China tectonic region underthrusting southwards,meanwhile the lower structural stratum of the Yangtze tectonic region upthrusting northwards,have pushed schist series of Qinling-Dabie tectonic region middle structural stratum.Thus a we-idged nappe was formed.A gravitation slip accompanied with pushing uplift has occurred. |
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| Keywords: | , |
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