西天山造山带构造单元划分及古生代洋陆转换过程  

Tectonic division and Paleozoic ocean-continent transition in Western Tianshan Orogen

作　　者：王宗秀[1] 李春麟[1] Pak Nikolai Ivleva Elena 余心起[3] 周高 肖伟峰[1] 韩淑琴[1] Halilov Zailabidin Takenov Nurgazy 鄢犀利[1] WANG Zongxiu;LI Chunlin;Pak Nikolai;Ivleva Elena;YU Xinqi;ZHOU Gaozhi;XIAO Weifeng;HAN Shuqin;Halilov Zailabidin;Takenov Nurgazy;YAN Xili(Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China;Institute of Geology, National Academy of Sciences of Kyrgyz Republic, Bishkek, 720040;China University of Geosciences (Beijing), Beijing 100086, China;Hubei Geological Survey, Wuhan 430034, Hubei, China;Kyrgyz Geophysical Expedition, Shopokov Town, Kyrgyzstan 724832;State Committee of Industry, Energy and Subsoil Use of Kyrgyz Republic, Bishkek, Kyrgyzstan 720739)

机构地区：[1]中国地质科学院地质力学研究所,北京100081 [2]Institute of Geology National Academy of Sciences of Kyrgyz Republic,Bishkek,720040 [3]中国地质大学(北京)地球科学与资源学院,北京100086 [4]湖北省地质调查研究院,湖北武汉430034 [5]Kyrgyz Geophysical Expedition,Shopokov Town,Kyrgyzstan 724832 [6]State Committee of Industry,Energy and Subsoil Use of Kyrgyz Republic,Bishkek,Kyrgyzstan 720739

出　　处：《中国地质》2017年第4期623-641,共19页Geology in China

基　　金：中国地质调查局地质调查项目(1212010811063、DD20160113)资助~~

摘　　要：西天山造山带位于哈萨克斯坦—准噶尔板块与卡拉库姆—塔里木板块的结合部,是由一系列前寒武纪微陆块、古生代洋壳残片及陆缘弧相互拼贴而成的多聚合带、多成矿带,其独特的造山-成矿过程受到了国内外的广泛关注。本文通过构造单元划分与编图,建立了古生代西天山造山带的构造格架,认为古生代西天山造山带的构造演化依次经历了:罗迪尼亚大陆裂解与北天山早古生代多岛洋盆形成阶段(Z-O_2),北天山早古生代多岛洋盆闭合与南天山洋盆开始形成阶段(O_3-S),南、北天山洋晚古生代洋盆形成与发展阶段(D-C_1),南、北天山晚古生代洋盆全面闭合与天山碰撞造山带形成阶段(C1-C_2)和碰撞后板内演化阶段(C_2-P)。Western Tianshan Orogen,located in the conjunction of the Kazakhstan-Junggar Plate and the Karakum-Tarim Plate,has been regarded as the collision zone and metallogenic zone consisting of a series of Precambrian blocks,Paleozoic oceanic crust,and continental marginal arcs.The study of the orogenic-metallogenic processes of western Tianshan Mountain have received extensive attention.In this paper,the authors established the tectonic framework of western Tianshan Orogen in the Paleozoic on the basis of the tectonic division,and proposed a five-stage model of the tectonic evolution in Paleozoic:Rodinia supercontinental breakup and the formation of the early Paleozoic archipelagic ocean in northern Tianshan Mountains(Z-O2),closure of the early Paleozoic archipelagic ocean in northern Tianshan Mountains and the incipience of the southern Tianshan oceanic basin(O3-S),formation and development of the northern and southern Tianshan oceanic basins in the late Paleozoic(D-C1),closure of the northern and southern Tianshan oceanic basins and the subsequent formation of Tianshan orogenic belt(C1-C2)and,finally,the post-collision stage of the intraplate environment(C2-P).

关 键 词：构造格架 洋陆转换过程 古生代 西天山造山带 

分 类 号：P542[天文地球—构造地质学]