藏北西部鲁玛江冬错地区新构造运动特征  

Characteristics of neotectonic movement in Lumajiangdongcuo region of north Tibet

作　　者：徐平[1] 张然[1] 侯婷婷[1] 朱晓君[1] 

机构地区：[1]江西省地质调查研究院,江西南昌330030

出　　处：《地质学刊》2009年第3期225-229,共5页Journal of Geology

基　　金：青藏高原南部空白区基础地质调查与研究项目(200313000013)

摘　　要：从地貌(断块山地及水系特征)、活动断裂和地震标志3个方面新构造运动的表现形式,阐述了西藏鲁玛江冬错地区新构造运动活动特征,并对晚新生代以来(尤其是早更新世以来)青藏高原地形的演化趋势进行了论述。晚新生代,尤其是早更新世以来,高原南北两侧的陆内俯冲仍然继续强烈进行,主夷平面瓦解,大型断陷盆地形成,高原整体继续强烈上升。高原主体正是经历了由此开始的新构造运动,才逐渐形成目前的地貌特征。Based on the three aspects of the neotectonic movement as landform features （faulted mountains and water system features）, active faults features and earthquake traces, the authors depicted in details the characteristics of the neotectonic movement in Lumajiangdongcuo region of Tibet, and expounded the trends of Qinghai-Tibet Plateau terrain since late Cenozoic Era （ especially since the early Pleistocene）. According to the above characteristic analyses, the authors considered that since late Cenozoic Era, especially the early Pleistocene, the intra-continental subduction in the southern and northern sides of the plateau continued to carry on intensively, the main plantation surface smashed, the large fault basin formed, and the all Qinghai-Tibet Plateau continued to uplift violently. The main body of the plateau underwent the above neotectonic movement, till the present landform characteristics gradually formed.

关 键 词：新构造运动 地貌特征 鲁玛江冬错地区 青藏高原 西藏西北部 

分 类 号：P546[天文地球—构造地质学]