羌塘盆地查郎拉地区中、新生代地质构造特征

本文系统研究了羌塘盆地查郎拉地区中、新生代的构造特征，将整个研究区划分为五个构造单元。即那日－ 破曲褶皱带、江达－ 杜日断褶带、塞仁那来－ 巴陇复式向斜断褶带、气相错－ 查巴断陷带、查曲公玛－ 日昂巴山间盆地。从晚三叠世以来，图幅内经历了印支期、燕山期、喜山期构造运动，印支期主要是在图幅北部上三叠统地层中形成北东向褶皱，燕山运动早期本区构造活动最为强烈，形成了全区范围内的东西向褶皱和断层，其中尤以南部塞仁那来－ 巴陇复式向斜断褶带最为强烈，构造最为紧密，燕山晚期，以断陷构造为主，形成中部的查曲公玛－ 日昂巴山间盆地和南部的气相错－ 查巴断陷带，喜山期主要是形成一些新构造活动。

STRUCTURAL CHARACTERISTIC OF MESOZOICCENOZOIC IN CHALANGLA AREAS, QIANGTANG BASIN, TIBET

The five tectonic units are classified in this area as follows Nari Poqu fold zone, Jiangda Duri of zone of bruchfalten, Sairennalai balong synelinorium zone of bruchfalten, Qixiangcuo Chaba graben faulting zone, Chiquglongma Ri'angba intermontane basin Since Triassic, the Mesozoic Cenozoic, this area has undergone three tectonic episodes: Yizhi, Yanshan, and Himalavan The fold zone in NE direction is formed in Yinzhi episode, the zone of bruchfaltendue early Yanshan episode, the graben faulting and intramontane basin due to later Yanshan episode, and the new tectonics due to Himalayamepisode [