| 南天山区域大地构造与演化 |
| |
| 引用本文： | 李曰俊,杨海军,赵岩,罗俊成,郑多明,刘亚雷.南天山区域大地构造与演化[J].大地构造与成矿学,2009,33(1). |
| |
| 作者姓名： | 李曰俊 杨海军 赵岩 罗俊成 郑多明 刘亚雷 |
| |
| 作者单位： | 1. 中国科学院地质与地球物理研究所,北京,100029
2. 中国石油塔里木油田公司,新疆,库尔勒,841000 |
| |
| 基金项目： | 国家重点基础研究发展规划(973计划)，中国科学院知识创新工程重要方向性项目，国家重点科技攻关项目 |
| |
| 摘 要： | 塔里木和中天山之间的南天山造山带,经历了复杂的构造演化与地壳增生过程。综合分析南天山造山带的构造、地层、古生物、岩石、地球化学和同位素年代学等方面的资料,特别是放射虫、蛇绿岩、蓝片岩等方面的最新研究成果,讨论了南天山的区域构造格局和演化过程。南天山主体为一上百公里宽的增生-碰撞混杂带-南天山(蛇绿)混杂带;其北侧为中天山岛弧,是仰冲壳楔;南侧为塔里木陆块,是俯冲壳楔。古南天山洋为一广阔的大洋,南天山碰撞造山作用起始于二叠纪末-三叠纪初,新近纪-第四纪进入陆内造山作用阶段。
|
| 关 键 词： | 中国南天山 (蛇绿)混杂带 增生楔 放射虫化石 高压变质带 火山弧 前陆盆地 碰撞造山 印支造山带 |
Tectonic Framework and Evolution of South Tianshan,NW China |
| |
| LI Yuejun,YANG Haijun,ZHAO Yan,LUO Juncheng,ZHENG Duoming,LIU Yalei.Tectonic Framework and Evolution of South Tianshan,NW China[J].Geotectonica et Metallogenia,2009,33(1). |
| |
| Authors: | LI Yuejun YANG Haijun ZHAO Yan LUO Juncheng ZHENG Duoming LIU Yalei |
| |
| Institution: | 1.Institute of Geology and Geophysics;Chinese Academy of Sciences;Beijing 100029;China;2.Tarim Oilfield Company;PetroChina;Korla 841000;Xinjiang;China |
| |
| Abstract: | Chinese South Tianshan(South Tianshan for short)orogen between Tarim and Chinese Middle Tianshan(Middle Tianshan for short)has undergone complicate tectonic evolution,especially,the fore-arc accretion during the oceanic crust subduction of the ancient South Tianshan ocean under the Middle Tianshan volcanic arc.Traditionally,South Tianshan has been considered as a Hercynian fold belt,and mostly as the passive margin of Tarim.We summarize and discuss the data of radiolarian fossil,ophiolite(mélange),high-pressure metamorphic belt,stratigraphy,deposits in the peripheral foreland basin and deformation in South Tianshan.The results indicate that:(1)The major part of South Tianshan is a large(ophiolite)mélange with over 100km in width,which comprises dominantly of the accretionary wedge and also some collision complex;(2)South Tianshan is an Indo-Sinian orogen derived from the collision between Tarim and Middle Tianshan in the late Permian-Early Triassic;(3)Middle Tianshan overthrusted onto the northern margin of Trim and formed Kuqia peripheral foreland basin during the collision;(4)The ancient South Tianshan Ocean is a vast oceanic basin;(5)Middle Tianshan is the front volcanic arc of South Siberian archipelago;(6)Northern Tarim crust subducted intra-continently under Middle Tianshan in the N-Q,and formed the Northern Tarim neo-foreland basin;(7)Kuqia peripheral foreland basin and Northern Tarim Neo-foreland basin constitute a dual foreland basin of a continental collision orogen. |
| |
| Keywords: | Chinese South Tianshan (ophiolite)mélange accretionary wedge radiolarian fossils |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
