作　　者： ; ;

机构地区： 西北大学地质学系地质系

出　　处： 《西北大学学报（自然科学版）》 1994年第2期163-166,178,共5页

摘　　要： 运用区域构造与局部变形相结合的方法对口镇─圣人桥地区的地质构造进行综合研究，并对断层系统进行区域追索调研。揭示出该地区的沉积盖层大致经历了加里东期和燕山期两期挤压褶皱变形及喜山期的拉张断陷作用。着重论证了该区不整合于加里东构造层之上的上古生界和中生界燕山期的构造特征、组合样式及其变形机制。厘定了作为鄂尔多斯地块南缘燕山期构造活动带与稳定地块分界的老龙山─圣人桥冲断带的存在及其区域地质意义。 The principles of regional tectonics,as well as analyses of local deformations,are appliedto sttidy the geological features of Kouzhen-Shengrenqiao′s area especially to research the fatilt sys-tem of this area。The covering strata of this area are mainly composed of Palaeozoic-Mesozoic。Theyhave at least undergone three times of deformational superpositions and reformations since late Pre-cambrian,i.e。twice compressional deformations during the Caleodonian and the Yanshanian,andonce extensive deformation during the Himalayan。The characteristics,styles and deformation mecha-nism of the Yanshanian tectonics in this area are well discussed;also,the botindary between the sta-ble Ordos block and the deformational zone of the Yanshanian is confirmed as Laolongshan-Shengren-qiao brittle overthrust。

关 键 词： 脆性逆冲断层 地质构造 构造运动

领　　域： [天文地球] [天文地球]