山西交城水峪贯区域构造及地貌形成因素分析

交城水峪贯区域地质构造复杂,三大岩类齐全,岩浆岩类发育,岩层露头特征明显,并伴有煤、铁等矿产分布。区内主要发育NNW、NNE、SN向构造体系,从构造、地貌、地层及岩浆岩等因素分析,本区域经历了多次地质构造运动,对其影响最大的为燕山运动。在早燕山期构造运动中近EW向的主应力作用下形成了本区域古洞道向斜、鲁沿向斜、山前大断裂等构造及狐偃山六大岩浆岩体,后期受应力转变造成本区域X型剪节理发育及构造扭曲等现象。形成了本区域现代地质构造及地貌轮廓。

Regional structure and geomorphological forming factors of Shuiyuguan in Jiaocheng City,Shanxi Province

The geologic structure in the Jiaocheng Shuiyuguan area is complicated.Three main types of magmatic rocks is complete,magmatic rock developmental,outcrop of beds obvious,with coal,iron and other minerals distribution.The main tectonic system are NNW,NNE and SN strike.Through the analysis of tectonic,land form,stratum,magmatic rock and other elements,it can be seen that many times geological structure movement has been experienced in this area,The biggest influence was ‘Yanshan Movement＇.In the early Yanshanian tectonic movement,under the principal stress near EW,it were formed that the Gudongdao syncline,Luyan syncline,piedmont major fault structure and Huyanshan six magmatic rock mass,and in the later period,＂X＂ Type shear joint and structural distortions effected by the stress change.All of these formed the modern geological structure and geomorphologic outline in this area.