| 南北构造带北段重磁异常的对应分析 |
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| 引用本文： | 殷秀华,黎益仕,刘占坡. 南北构造带北段重磁异常的对应分析[J]. 地震地质, 1999, 21(4): 370-376 |
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| 作者姓名： | 殷秀华 黎益仕 刘占坡 |
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| 作者单位： | 中国地震局地质研究所,北京,100029 |
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| 基金项目： | 地震科学联合基金!(91074) |
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| 摘 要： | 论述了重磁异常对应分析方法原理和地质解释的地球物理基础,计算了南北构造带北段上延5 ～50km 的重磁对应分析的相关系数R和斜率α的平面分布曲线,结合其它地质和地球物理资料,初步分析认为:(1) 中朝准地台的阿拉善台隆和鄂尔多斯台缘隆起区属于正常地壳结构;鄂尔多斯台缘坳陷区属于非正常地壳结构;(2) 祁连秦岭褶皱区地壳结构比较复杂,南、北祁连和礼县 柞水褶皱带的地壳为基本正常地壳结构;祁连北部走廊过渡带、中部隆起带和南秦岭褶皱带西段的地壳属于非正常地壳结构;(3)相关系数转换带的平面分布特征大致反映了断裂带的伸展方向,在剖面上的位置大致与断裂带构造位置相对应
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| 关 键 词： | 重磁法 南北构造带 地壳结构 对应分析 |
| 修稿时间： | 1999-03-01 |
INTERNAL CORRESPONDENCE ANALYSIS OF GRAVIMETRIC AND MAGNETIC DATA FOR THE NORTHERN PART OF SOUTH-NORTH TECTONIC ZONE |
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| Yin Xiuhua,LI Yishi,Liu Zhanpo. INTERNAL CORRESPONDENCE ANALYSIS OF GRAVIMETRIC AND MAGNETIC DATA FOR THE NORTHERN PART OF SOUTH-NORTH TECTONIC ZONE[J]. Seismology and Geology, 1999, 21(4): 370-376 |
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| Authors: | Yin Xiuhua LI Yishi Liu Zhanpo |
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| Abstract: | The principle of internal corresponndence analysis(ICA) of gravimetric and magnetic data and geophysical foundation of geologic interpretation are presented. The plane curves of correlation coefficient R and slope α are calculated by ICA of gravimetric and magnetic data which are continued upward to 5km～50km in the northern part of south north tectonic zone. Combined with other geological and geophysical data, these analysis results are interpreted to reveal the feature of the crustal structures fo |
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| Keywords: | Gravity magnetic method North South tectonic belt Crustal structure Internal correspondence analysis |
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