冀鲁豫交界区岩石圈磁场异常分布与磁化率结构分析

Analysis of lithospheric magnetic field anomaly distribution and magnetic susceptibility structure in the boundary area between Hebei,Shandong and Henan provinces

利用重磁反演软件,对2017年8月冀鲁豫交界区流动地磁总强度数据进行处理并解析延拓,研究该区岩石圈磁场及其深部、浅表磁场异常分布特征与地下介质磁化率结构的性质。结果表明:冀鲁豫交界区岩石圈磁场异常分布是岩石圈浅表与深部磁异常综合叠加的结果,岩石圈地下介质的浅表与深部磁化率结构具有一定差异性,且受断裂控制呈分段性特征,可能与该区域复杂的岩石圈磁化率结构及地质构造有关。

Gravity and magnetic inversion software was used for data processing and analytical extension of the total magnetic intensity of flowing geomagnetic field in the boundary area between Hebei,Shandong and Henan provinces in August 2017,studies the lithospheric magnetic field,the anomaly distribution characteristics of deep and shallow surface and the magnetic susceptibility structure of underground medium in this area.The results show that the distribution characteristics of lithospheric magnetic field anomalies in the boundary area between Hebei,Shandong and Henan provinces are the results of the comprehensive superposition of shallow and deep lithospheric magnetic anomalies.The shallow susceptibility structure of the lithosphere underground medium is different from that of the deep one and it is controlled by faults,which may be related to the complex lithospheric susceptibility structure and geological structure in this area.