藏北羌塘盆地构造变形及其动力学背景  

Structural Deformation and Dynamic Mechanism of the Qiangtang Basin, North Tibet

作　　者：雷振宇[1] 李永铁[1] 刘忠[1] 鲁兵[2] 

机构地区：[1]石油勘探开发科学研究院,北京100083 [2]大庆石油学院,黑龙江安达151400

出　　处：《地质论评》2001年第4期415-419,共5页Geological Review

基　　金：国家发展规划基础项目;中国博士后基金(第21批);中国石油天然气集团公司博士后基金

摘　　要：本文根据盆地的变形特征,将其分为5个变形区,其中北部边缘断褶带和玛依岗日断隆区分别以叠瓦式组合和背冲断块为主,而拉雄错—雀莫错等构造区以发育对称或不对称类隔档式褶皱为特征。其构造变形及其组合方式为燕山—喜马拉雅期羌塘地块和南部诸地块向北不等速运动所造成的南北向压应力场所致。According to its structure characteristics, the Qiangtang Basin can be divided into five structural areas. The fault-fold zone on the north margin is dominated by imbracated structure, the Mayer Kangri fault-up-welling area by back thrusting blocks, while the Laxong Co-Qoima Co complex fold zone and others are characterized by symmetric or asymmetric structures. The structural deformation is mainly caused by the N-S com-pressive stress field resulting from northward movement of the Qiangtang massif and other southern massives during the Yangshanian-Himalayan period.

关 键 词：羌塘盆地 构造变形 构造应力场 古地磁 地幔流 动力学背景 

分 类 号：P544.4[天文地球—构造地质学]