西昆仑塔木一带山前推覆构造样式浅析  

Structural Styles of the Piedmont Nappe of the West Kunlun Mountains

作　　者：欧健[1] 李向前[1] 潘明宝[1] 贺新星[1] 郭刚[1] 许应石[1] 

机构地区：[1]江苏省地质调查研究院,江苏南京210018

出　　处：《西北地质》2014年第4期37-46,共10页Northwestern Geology

基　　金：中国地质调查局项目"新疆西昆仑1:5万J43E009017;J43E010017;J43E010018;J43E011017;J43E011018"(1212011220631)

摘　　要：通过大量野外地质调查以及构造剖面测制工作,根据构造样式和变形特征,将西昆仑塔木一带山前推覆构造带,由南西往北东划分为5个带,变形程度依次降低。通过对卡克巴西阿格孜构造窗的调查,显示本区域至少存在2期推覆构造活动:第一期发生在晚古生代末期,具后展式特征;第二期发生于晚新生代开始,显示出前展式特征。Plenty of field work and tectonic section measures have been carried out in the study area. According to tectonic and deformation characteristics, 5 tectonic zones are recognized a- mong the nappe tectonics of western Kunlun, with the degree of distortion comes down from southwest to northeast. Researches of Kakebaxi＇ agezi nappe inlier show at least two-stage nappe tectonic activities in this area： end of late Palaeozoic and after late Cenozoic, which are characterized by piggyback and overstep propagation respectively.

关 键 词：推覆构造 构造窗 叠瓦扇 构造时限 西昆仑 塔木 

分 类 号：P542[天文地球—构造地质学]