期刊文献+

西昆仑山北部早古生代构造—岩浆带的发现 预览 被引量:74

A DISCOVERY OF AN EARLY PALEOZOIC TECTONOMAGMATIC BELT IN THE NORTHERN PART OF WEST KUNLUN MOUNTAINS
在线阅读 下载PDF
收藏 分享 导出
摘要 1987年以来,先后做了4条横穿昆仑山的综合路线地质调查。它们是:中-巴公路沿线;新-藏公路沿线;于田且普鲁村-苏巴什-硫磺达坂路线;青海茫崖镇-祁曼塔格路线。在西昆仑山北部的调查区内,都有钙-碱性的深成岩体出露。通过对这些岩体系统地做U-Pb,Ar-Ar及Rb-Sr定年研究,发现它们具有早古生代年龄(384-480Ma),延伸上千公里,形成于活动大陆边缘或碰撞后的构造环境,常与属于蛇绿岩套的组分 Since 1987, totally four integrated geological investigation profiles across the West Kunlun Mountains were performed. They are: (1)Profile along the Sino-Pakistan highway (from Kashigar to Kunjirap Pass); (2)Profile along the XinjiangXizang highway .(from Yecheng to Shiquanhe); (3) Pulu Village, Yutian CountySubaxi-Liuhuang Pass profile, and(4) Mangnai Town, Qinghai-Qimantaga-Muzhtaga peak profile. In the investigation region, in the northern part of the West Kunlun Mountains calc-alkaline plutonic rocks are exposed. Systematical geochronological studies of the plutonic rocks have been done, in the paper 5 U-Pb dating on the zircons,3 Ar-Ar dating on the honblende and biotites and 5 Rb-Sr dating on the wholerocks and minerals from the plutons are reported. These results enabled us to find an early Paleozoic (384-480Ma) tectono-magmatic belt, extending for a thousandof kilometers. It was formed on an active continental margin or in a postcollisional tectonis envionment, and is accompanied with a complex belonging to ophiolite suit in Kudi, Subaxi and Oy ag area. It is a newly found and defined suture zonein the interior of the Qinghai-Xizang Plateau.
作者 许荣华 Vidal,P Xu Ronghua(Institute of Geology, Chinese Academy of Sciences, Beijing 100029)Zhang Yuquan;Xie Yingwen(Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002)Chen Fukun(Institute of Geology, Chinese Academy of Sciences, Beijing 100029)Ph. V
出处 《地质科学》 CAS CSCD 北大核心 1994年第4期 313-328,共16页 Chinese Journal of Geology
基金 国家自然科学基金,中国科学院重点资助,法国科研中心合作研究项目
关键词 昆仑山 花岗岩类 构造-岩浆带 缝合带 早古生代 Kunlun Mountains Paleozoicera Geochronology Granitoid Tectono-magmatic belt Suture zone
  • 相关文献

参考文献14

二级参考文献47

共引文献200

同被引文献1970

引证文献74

二级引证文献855

投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈