中国西南天山及邻区大地构造研究  

GEOTECTONIC RESEARCH OF SOUTHWEST TIANSHAN AND IT SWEST ADJACENT AREA, CHINA

作　　者：何国琦[1] 李茂松[1] 韩宝福[1] 

机构地区：[1]北京大学地质学系,北京100871

出　　处：《新疆地质》2001年第1期7-11,共5页Xinjiang Geology

基　　金：国家305项目!(969150402)

摘　　要：根据区域构造判断，邻区新确立的吉尔吉斯—帖尔斯克伊古洋及其伴生的陆缘向东延到了中国的西南天山，它应从比依克—那拉提山的北缘通过。从晚里菲纪到早奥陶世早期，是该古洋从裂谷发育到成熟大洋的时期，这与罗丁尼亚（Rodinia）超大陆的解体时期相当。而由阿兰苏依岩系代表的塔里木陆缘裂解和南天山古洋开始发生的时期看，也与罗丁尼亚超大陆的解体时期大体相当。文中简述了邻区南天山研究的历史和近年取得的新认识。基于作者对我国西南天山的认识和参考邻区南天山的新资料，建议将哈萨克斯坦－准噶尔板块和塔里木板块的界线划在中天山的南缘。According to new tectonic data, the Kirghiz-Terskei Palaeo-Ocean, which is just established in the west adjacent area, and its continental margin stretch into the southwest Tianshan of Xinjiang, China. They may situate north part of Biyik-Nalat Mountains. Develop of the palaeo-ocean from rift to mature ocean was from late Piphean to early Ordovician. It is well-matched in time with disruption of the Rodinia Supercontinent. Splitting time of continental margin of Tarim Plate representing by the Alansuy System and beginning time of the South Tianshan Palaeo-Ocean are also about the same with time of disruption of the Rodinian Supercontinent. According to our study and new data of the west adjacent area, we consider that the boundary between Kazakhstan-Jungger Plate and Tarim Plate should be located at south wedge of the Middle Tianshan. In addition, this paper also discusses the characteristics and evolution of palaeo-ocean of the Southwest Tianshan, Xinjian.

关 键 词：大地构造 中国 西南地区 区域构造 RODINIA超大陆 

分 类 号：P542[天文地球—构造地质学]