甘肃白银地区了高山多期活动断裂带变形特征及运动机制探讨  

DEFORMATION CHARACTERISTICS AND MOTION MECHANISM OF MULTI-STAGE ACTIVE FAULT ZONES IN BAIYIN AREAS OF GANSU

作　　者：霍勤知[1] 肖林[1] 钱壮志[2] 闫海卿[2] HUO Qin-zhi;XIAO Lin;QIAN Zhuang-zhi;YAN Hai-qing(Geological Survey of Gansu Province,Lanzhou 730000,China;Chang'an University,Xi'an 710000,China)

机构地区：[1]甘肃省地质调查院,甘肃兰州730000 [2]长安大学,陕西西安710000

出　　处：《甘肃地质》2022年第4期1-6,共6页Gansu Geology

基　　金：兰州幅1∶25万区域地质调查项目(J6.2.7)。

摘　　要：了高山断裂带位于中北祁连结合带东段,为自加里东构造中期开始,发生板块俯冲—软碰撞—逆冲推覆造山过程中,多期构造叠加变形而形成的复杂的构造带。在1∶25万区调过程中,笔者通过对该断裂带内各类构造变形的观察和分析,采用构造解析的理论和方法,进行了构造变形序列和变形特征的分析研究,探讨其运动机制,为祁连造山带时空分布及其发展提供重要的地质依据。Liaogaoshan faulted zone lie in the eastern segment of the centeral-northern Qilian junction zone, It happened subduction-soft collision-thrust-nappe tectonic beginning centeral Caledonian, then became a complex tectonic belt because of different periods deformations. In the 1 ∶ 250 000 regional geological survey,the author studied the tectonic deformation sequence and deformation features of this zone by the structural analysis methods. It provides important geologic evidenced for the time-area and developments of Qilian orogenic belts.

关 键 词：断裂带 变形特征 逆冲推覆 多期活动 运动机制 北祁连 甘肃白银 

分 类 号：P542[天文地球—构造地质学]