西天山的增生造山过程

被引：433

作者：

高俊 ^{[1
]}

钱青 ^{[1
]}

龙灵利 ^{[2
]}

张喜 ^{[1
]}

李继磊 ^{[1
]}

苏文 ^{[1
]}

机构：

[1] 中国科学院地质与地球物理研究所矿产资源研究重点实验室

[2] 北京矿产地质研究院

来源：

地质通报 | 2009年 / 28卷 / 12期

关键词：

西天山; 蛇绿岩; 高压变质岩; 花岗岩; 增生造山;

D O I：

暂无

中图分类号：

P542.2 [];

学科分类号：

摘要：

西天山位于中亚造山带的西南缘,经历了复杂的增生造山过程。它也是标志塔里木地块北部被动陆缘与西伯利亚地块南侧宽阔活动陆缘最后拼合的构造带。根据近年来的研究进展,将西天山划分为北天山弧增生体、伊犁地块北缘活动陆缘、伊犁地块、伊犁地块南缘活动陆缘、中天山复合弧地体、西天山(高压)增生楔和塔里木北部被动大陆边缘。同时综述了西天山蛇绿岩、高压变质岩、花岗岩类的年代学新资料,讨论了其增生造山的过程。西天山增生造山与早古生代帖尔斯克依古洋、早古生代晚期—晚古生代南天山洋和晚古生代北天山洋3个代表洋盆的演化相关,增生造山结束的时间可能是早石炭世末。二叠纪时期,西天山至整个中亚地区进入后碰撞演化阶段。现有资料证实西天山为晚古生代增生造山带,并非三叠纪碰撞造山带。

引用

页码：1804 / 1816

页数：13

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