| 湖南大地构造单元划分及其地球物理场特征 |
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| 引用本文： | 谢湘雄.湖南大地构造单元划分及其地球物理场特征[J].湖南地质,1992,11(4):334-342. |
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| 作者姓名： | 谢湘雄 |
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| 作者单位： | 湖南省地质学校 长沙 |
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| 摘 要： | 不同大地构造单元,具有不同的地球物理场特征,这些特征,显然是划分不同构造单元的准则之一。湖南大地构造分区的焦点,是江南地轴的归属问题,本文根据地震和重磁资料等,论述了它隶属于扬子准地台的合理性。指出省内两个一级构造单元的分界应在江南地轴东南缘,其南西段与传统界线一致,北东段有重大改变,应将衡阳盆地和浏阳隆起包容到江南地轴区。最后,本文突出地球物理场特征,在前人工作的基础上对我省Ⅱ、Ⅲ、Ⅳ级构造单元进行了划分。
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| 关 键 词： | 大地构造 地球物理场 湖南 |
ON THE DIVISION OF GEOTECTONIC UNIIS IN HUNAN PROVINCE AND THEIR CHARACTERISTICS OF GEOPHYSICAL FIELD |
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| Xie Xiangxiong.ON THE DIVISION OF GEOTECTONIC UNIIS IN HUNAN PROVINCE AND THEIR CHARACTERISTICS OF GEOPHYSICAL FIELD[J].Hunan Geology,1992,11(4):334-342. |
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| Authors: | Xie Xiangxiong |
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| Institution: | Geological School of Hunan Province |
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| Abstract: | Different kinds of geotectonic unit are of different features of geophysical field, which can be based to differentiate geotectonic untis. The central issue on the geotectonic zoning in Hunan is the tectonic position of Jiangnan axis, which is proved in this paper to belong to Yangtze paraplatform based on seismic, gravitational and magnetic data. It is pointed out that the boundary of the two pri-mary geotectonic units should be along the southeastern margin of Jiangnan axis. The southwestern pa-rt of the boundary is of no difference from the traditional boundary, while the northeastern part of it is changed greatly, into which Hengyang basin and Liuyang uprise should be incorporated. Finally, secondary and sub-class geotectonic unit division is made for the whole province on the basis of the former studies especilly based on the characteristics of geophysical fields. |
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| Keywords: | Geotectonics Yangtze paraplatform South China fold belt Jiangnan axis Geophysical field Seismic epicentre |
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