华北克拉通南部及邻区航磁异常特征与构造分区  

Aeromagnetic Anomalies Characteristics and Tectonic Subareas of Southern North China Craton and Adjacent Regions

作　　者：杨明慧[1,2] 王嗣敏[1,2] 郑晓凤[3] 王金秀[1] 白桦[1] 曾鹏[1] 

机构地区：[1]中国石油大学资源与信息学院,北京102249 [2]中国石油大学油气资源与探测国家重点实验室,北京102249 [3]中国石油冀东油田分公司勘探开发研究院,河北唐山063004

出　　处：《地质论评》2009年第6期862-872,共11页Geological Review

基　　金：国家自然科学基金重点项目(编号90814005);油气资源与探测国家重点实验室开放基金项目(编号2008002)的成果

摘　　要：据地球物理、地质资料分析,华北克拉通南部及邻区发育NWW—近EW向和NE—NNE向等两组断裂,其中焦作—商丘断裂带、鲁山—阜阳—淮南断裂带、栾川—固始—肥中断裂带和郯城—庐江断裂带、夏邑—涡阳—麻城断裂带具有构造分区断裂特征。通过航磁异常特征分析,华北克拉通南部分为秦岭—大别磁异常区和南华北磁异常区,后者可次分为豫西磁异常区、豫东磁异常区、夏邑—阜阳磁异常带和徐州—淮南磁异常区等四个磁场分区。结合分区断裂系统研究,指出华北克拉通南部中新生代构造分区包括豫西盆岭区、豫东盆地区和徐州—淮南盆地区。豫西盆岭区以NE向的嵩县—谭头、洛宁—卢氏和灵宝—朱阳盆地及熊耳山、崤山和小秦岭盆岭相间分布为特征;豫东盆地区发育NWW向伸展断陷,而徐州—淮南盆地区则以向NW逆冲断层及与之伴生的线性褶皱和断陷盆地为特征。Based on the research of geology and geophysics, two fault zones NWW-EW and NE- NNE trending developed in the southern North China Craton （NCC）. Among that, Jiaozuo-Shangqiu fault, Lushan-Fuyang-Huainan fault, Luanchuan-Gushi-Feizhong fault, Tancheng-Lujiang fault and Xiayi-Woyang-Macheng fault have characteristic of structural subarea. Besides, according to the analysis of aeromagnetic anomaly, the writers divide southern NCC and adjacent areas into Qinling-Dabie aeromagnetic anomaly zone and southern NCC aeromagnetic anomaly area. Furthermore, the latter can be divided into western Henan, eastern Henan, Xiayi Woyang and Xuzhou-Huainan aeromagnetic anomaly area. Combined with research of fault systems in structural subarea, the writers divided the southern NCC in Meso-Cenozoic into western Henan basin-ridge area, eastern Henan basin area and Xuzhou-Huainan basin area. The western Henan basin-ridge area has the characteristic of partitioning distribution among the Songxian-Tantou, Luoning-Lushi, Lingbao-Zhuyang basin and Xiong＇er Mountain, Yaoshan Mountain, Xiaoqinling Mountain. The eastern Henan basin area develops NWW trending extensional faulted-basin which the Xuzhou-Huainan basin area has the characteristic of NW trending thrust faults and associated with linear folds and faulted-basins.

关 键 词：断裂系统 构造分区 航磁异常 中新生代 华北克拉通 

分 类 号：P542[天文地球—构造地质学]