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

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。

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

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.