摘要
根据新疆及其它相关地学断面所获资料,论述了中国西北盆山构造地区的地壳结构.已有资料表明,在中国西北盆山地区,山脉和盆地具有明显不同的地壳结构,它们的地壳厚度不同,表现为山区地壳厚,具有明显的山根;盆地区地壳厚度小.同时地壳分层和各层的组分也有所差异.这些地壳本身结构性的差异,以及它们所受到的应力状态和热状态的不同,就是本区各种构造活动产生的根源.最后从区内地质构造形成过程讨论了区内地壳不同结构形成的演化历史.
Based on the data of the Xinjiang Geotransect and other related geotransects, the crustal tectonics of the basin-mountains area in northwestern China are discussed in this paper. In this area, there are obviously different crustal tectonics within the basins and mountains displaying that the thickness of crust in the mountain areas is greater with obvious “mountain root” and thinner in basin areas. There are many differences in the layering of crust and the composition of different layers in this area. These differences and the stress state and geothermal state of the crust are the source of different tectonic movements in this area. Finally, this paper discusses the formation history of the crustal tectonics of the basin-mountains area in northwestern China from the geological development and tectonic evolution processes.
出处
《新疆地质》
CAS
CSCD
2004年第4期343-350,共8页
Xinjiang Geology
基金
原地质矿产部(9501204)
国家自然科学基金(F497342340)
国家新疆 305 项目(969150703)
国土资源部科技项目(20001010201)共同资助
