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新疆北部及邻区地质构造单元与地质发展史
引用本文:王广瑞.新疆北部及邻区地质构造单元与地质发展史[J].新疆地质,1996(1).
作者姓名:王广瑞
作者单位:新疆维吾尔自治区地质矿产局地质矿产研究所
摘    要:新疆北部及邻区在区域构造上分属西伯利亚、哈萨克斯坦—准噶尔及塔里木三大板块,它们被两条时代不同(石炭—二叠纪、志留—泥盆纪)、规模宏伟的板块缝合构造带所分隔,缝合构造带与两侧板块有着密切的亲缘关系,却无隶属的“父子”关系,三大板块自元古宙发生解体裂移后,增生作用主要发生在早古生代,主要是依据各陆缘的不同特征分别形成岛弧或边缘海盆;进入晚古生代后,哈萨克斯坦—准噶尔板块与培里木板块已率先完成碰撞缝合,此时除斋桑—额尔齐斯—线尚有古亚洲洋残余外,绝大部分地区均进入陆内构造发展阶段,其主要构造活动是“手风琴式’的开合构造,形成一些裂陷槽、裂谷和上叠盆地。研究区内共分出15个二级构造单元和44个三级单元。

关 键 词:新疆北部,邻区,板块缝合构造带,复合岛弧,裂陷槽,构造发展史,阿克苏洋盆

CLASSIFICATION OF TECTONIC UNITS AND GEOLOGIC EVOLUTION IN THE NORTHERN XINJIANG AND NEIGHBORING AREA
Wang Guangrui.CLASSIFICATION OF TECTONIC UNITS AND GEOLOGIC EVOLUTION IN THE NORTHERN XINJIANG AND NEIGHBORING AREA[J].Xinjiang Geology,1996(1).
Authors:Wang Guangrui
Abstract:The regional tectonics of the northern Xinjiang and neighboring area includes Siberia plate,Kazakhstan-Junggar plate and Tarim plate which are bounded by two large-scale tectonic suture zones, of different ages(C-P and S-D). The suture zones have bloody relation with,plates on both sides, but not" father-and-son" relation. Following the Proterozoic disintegration and migration of three plates, accretion occured at the early Palaeozoic, and island arc or marginaL oceanic basin formed at different continental margins. Up to Late Palaeozoic, collision and suturing of Kazakhstan-Junggar plate and Tarim plate were first finished. An intraland tectonic evolution began in most regions, except the region along Zhaisang -Ertix where existed residum of palaeo-Asian ocean. The opening-closing tectonic activities were the dominant, and formed some rift trough, rift valleys and overlapping basins. Fifteen secondary tectonic units and 44 thirdgrade units were subdivided.
Keywords:northern Xinjing neighboring area suture zone of plates composite island arc rift trough tectonic evolution Aksu oceanic basin
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