从新疆地学断面的成果讨论中国西北盆-山区的地壳构造演化  

A Study of the Crustal Tectonic Evolution in Basin-Mountain Areas of Northwest China in the Light of Xinjiang Geotransect

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：《地球学报》2005年第2期105-112,共8页Acta Geoscientica Sinica

基　　金：为"新疆独山子 泉水河地学断面"项目〔原地质矿产部项目 (编号 :95 0 12 0 4);国家自然科学基金项目 (编号 :F4973 42 3 0 );国家新疆 3 0 5项目编号 :( 96 915 0 7 0 3 );国土资源部科技项目 (编号 :2 0 0 0 10 10 2 0 1)〕成果的一部分

摘　　要：本文从新疆独山子泉水沟地学断面的资料介绍了准噶尔盆地、天山、塔里木盆地和昆仑山等新疆南部不同地区的地壳结构构造,进而对中国西北盆 山地区地壳构造及演化的某些特征进行了探讨。提出:中国西部 盆山地区地壳构造运动发生的主要原因是地壳及上地幔的不均一性(包括结构构造的不均一性以及物质成分的不均一性)。强调了现代盆山构造面貌虽然是新生代的产物,但其形成从中生代就已经开始,是一个延续的历史过程;但二者又有所不同,目前的盆山构造格局已明显不同于中生代甚至古生代的盆山构造面貌。Based on the achievements of Geotransect from Dushanzi to Quanshuigou of Xinjiang, this paper deals with the crustal structure and tectonics of such areas of southern Xinjiang as Junggar basin, Tianshan Mountains, Tarim basin and Kunlun Mountains. Some characteristics of the crustal structure and tectonic evolution history of basin-mountain areas in Northwest China are also discussed. The author holds that the tectonic movement of the crust in the basin-mountain areas of Northwest China is mainly attributed to the unhomogeneity of the crust and the upper mantle, including the unhomogeneity of structures and components. It is emphasized in this paper that the present tectonic features of basin-mountain areas are products of Cenozoic crustal activities. Its formation started in Mesozoic or even Late Paleozoic. It is therefore a continuous historical process. Nevertheless, their present frameworks are quite different from those in Mesozoic.

关 键 词：中国西北 地壳构造演化 新疆地学断面 盆-山构造 山区 不均一性 地壳构造运动 结构构造 准噶尔盆地 塔里木盆地 新疆南部 物质成分 中国西部 历史过程 构造格局 中生代 独山子 昆仑山 上地幔 新生代 古生代 山地 面貌 天山 

分 类 号：P445.4[天文地球—大气科学及气象学] P548.256