【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。更多还原

【Abstract】 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.更多还原