| 京津及周围地区区域磁异常和地壳磁性层变化的讨论 |
| |
| 引用本文： | 陶国保,陈益惠.京津及周围地区区域磁异常和地壳磁性层变化的讨论[J].地震地质,1982,4(3):53. |
| |
| 作者姓名： | 陶国保 陈益惠 |
| |
| 作者单位： | 国家地震局地质研究所
(陶国保)，国家地震局地质研究所(陈益惠) |
| |
| 摘 要： | 本文对提取区域磁异常方法作了讨论。在对京津及周围地区航磁资料进行了一系列向上延拓基础上,提出区域磁异常可区分为上部区域异常及下部区域异常。它们分别与地壳的上、下磁性层对应。文中根据上部区域磁异常,对前寒武纪变质基底作了构造分区。根据下部区域磁异常,推测地壳下部磁性层受后期的中、新生代岩浆作用的影响很大。同时又探讨了第三类深部区域异常,推测其可能是莫霍面隆起所致
|
| 关 键 词： | 区域磁异常 磁性层 地壳 居里面 周围地区 京津 区域异常 平原区 变质基底 莫霍面 |
A PRELIMINARY DISCUSSION ON THE REGIONAL MAGNETIC ANOMALY AND CRUSTAL MAGNETIC LAYERS IN BEIJING-TIANJIN AND SURROUNDING AREAS |
| |
| Abstract: | This paper discusses the method by which the regional anomaly can be abstracted.On the basis of making a series of upward continuation of the aeromagnetic data from Beijing-Tianjin and surrounding areas, it is proposed that the regional anomaly can be divided into two parts: the upper one and the lower one corresponding to the upper and lower crustal magnetic layers, respectively. According to the Pre-cambrian metamor-phic basement the study region can tectonically be divided into six blocks |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
