天山—西昆仑地区沉积—构造演化史——新疆地学断面走廊域及邻区不同地体的沉积—构造演化  

SEDIMENTARY-TECTONIC EVOLUTIONARY HISTORY OF THE TIANSHAN TO WEST KUNLUN AREA IN WEST CHINA ──THE SEDIMENTARY-TECTONIC EVOLUTION OF THE TERRANES IN THE CORRIDOR OF THE XINJIANG GEOTRANSECT AND ITS ADJACENT AREAS

作　　者：刘训[1] 

机构地区：[1]中国地质科学院地质研究所,北京100037

出　　处：《古地理学报》2001年第3期21-31,共11页Journal of Palaeogeography：Chinese Edition

基　　金："新疆天山 (独山子 )-昆仑山 (泉水沟 )地学断面";地质矿产部 (95 0 12 04);新疆30 5项目办公室 (96 - 915 - 0 7- 0 3);国家自然科学基金委员会 (4 9734 2 30 )的共同资助

摘　　要：通过新疆地学断面项目的研究 ,探讨了新疆南部天山—塔里木—昆仑山地区的沉积—构造演化史。以古生代及其以后的历史为重点 ,针对若干有争议的问题提出了初步的认识。本区的地壳演化历史可以分为 4个不同的时期 ,总体来说 ,表现为一个地壳逐渐从活动趋于稳定、不同时期的古洋盆闭合和不同陆壳板块碰撞拼合的过程。古生代时以古亚洲洋的活动为主导因素 ,到古生代末 ,北方形成统一的古欧亚大陆。晚古生代至中生代时受南面特提斯洋活动所控制 ,随着特提斯洋的闭合及南侧陆块的碰撞 ,发生了一系列沉积—构造事件 ,包括古特提斯洋的闭合和康西瓦缝合带的形成 ,南侧羌塘、冈底斯和喜马拉雅等陆块的碰撞等 。Based on the researches of the'Xinjiang Geotransect' project, the sedimentary tectonic evolutionary history of the Tianshan Mauntain Tarim Kunlun Mauntain area in southern Xinjiang is discussed in this paper. The discussion is predominant in the history of Paleozoic and Meso Cenozoic. The history of the crustal evolution in the study area can be divided into 4 periods. Generally speaking, it is the process that the paleo oceanic basin in different periods was gradually closed, the different continental plates were collised and amalgamated,which made the crust of this area become more stable. The main factor of the evolution in Paleozoic was the activities of the Paleo Asian oceanic basin. By the end of Paleozoic, the Paleo Eurasian continent formed on the north part of the corridor. The evolution in Late Paleozoic to Mesozoic is controlled by the activities of the Paleo Tethys Oceanic Basin in the south. Following the closing of the Tethys Ocean and the collisions of the continental blocks in the south, a series of sedimentary and tectonic events took place in this area, including the closing of the Paleo Tethys Oceanic Basin, the forming of the Kangxiwar Suture Zone and some responses by the collision of Qiangtang, Gangdise and Himalayan blocks in the south. All of these formed the recent features of basin mountain tectonics and plenty mineral resources.

关 键 词：天山-西昆仑地区 沉积-构造演化 地体拼合 地学断面 

分 类 号：P542[天文地球—构造地质学] P531[天文地球—地质学]