Relationship between the Extent of Igneous Rocks and Deep Structures as Determined by Gravitational and Magnetic Data in the South China Sea

作     者：YANG Min WANG Wanyin ZHANG Gongcheng MA Jie YANG Min;WANG Wanyin;ZHANG Gongcheng;MA Jie

作者机构：Institution of Gravity and Magnetic TechnologyChang'an UniversityXi'an 710054China Department of Earth SciencesMemorial University of NewfoundlandSt.John'sNewfoundland A1B 3X5Canada CNOOC Research Institute Co.Ltd.Beijing 100028China 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2021年第95卷第1期

页      面：294-304页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：supported by CNOOC Research Institute,the Major National R&D project(Grant No.2008 ZX05025) the National R&D project(Grant No.2017 yfc0602202) 

主　　题：igneous rocks fusion of gravity and magnetic data deep structures South China Sea 

摘      要：The distribution of oil and gas resources in the South China Sea and adjacent areas is closely related to the structural pattern that helped to define the controlling effect of deep processes on oil-bearing *** rocks can record important information from deep *** structures such as faults,basin uplift and depression,Cenozoic basement and magnetic basement are all the results of energy exchange within the *** study of the relationship between igneous rocks and deep structures is of great significance for the study of the South China *** using the minimum curvature potential field separation technique and the correlation analysis technique of gravitational and magnetic anomalies,the fusion of gravitational and magnetic data reflecting igneous rocks can be obtained,through which the igneous rocks with high susceptibility/high density or high susceptibility/low density can be *** this study area,igneous rocks do not develop in the Yinggehai basin,Qiongdongnan basin,Zengmu basin and Brunei-Sabah basin whilst igneous rocks with high susceptibility/high density or high susceptibility/low density are widely-developed in other *** undeveloped igneous areas,faults are also undeveloped the Cenozoic thickness is greater,the magnetic basement depth is greater and the Cenozoic thickness is highly positively correlated with the magnetic basement *** igneously developed regions,the distribution pattern of the Qiongtai block is mainly controlled by primary faults,while the distribution of the Zhongxisha block,Xunta block and Yongshu-Taiping block is mainly controlled by secondary faults,the Cenozoic thickness having a low correlation with the depth of the magnetic basement.