| 西藏措勤区一带蛇绿岩特征及其构造环境探讨 |
| |
| 引用本文： | 谢云喜,江元生.西藏措勤区一带蛇绿岩特征及其构造环境探讨[J].四川地质学报,2011(3):255-259. |
| |
| 作者姓名： | 谢云喜 江元生 |
| |
| 作者单位： | 四川省地矿局区域地质调查队; |
| |
| 基金项目： | 中国地质调查局地质大调查项目(20001300009261) |
| |
| 摘 要： | 文章中所述范围囊括于西藏1∶25万措勤区幅内,处于雅鲁藏布江基性-超基性岩带—念青唐古拉岛弧岩浆带内。岩浆活动频繁,从侏罗纪到第四纪均有不同程度的岩浆活动。岩浆侵入活动主要发生在燕山期和喜马拉雅期,以中酸性岩占绝对优势,基性-超基性岩次之。区内基性-超基性岩属昂仁蛇绿岩的组成部分(以下称安巴蛇绿岩),此套岩类主要形成于洋脊,并具有向洋岛过渡的构造环境。其形成时代为晚白垩世早期。
|
| 关 键 词： | 基性-超基性岩 蛇绿岩 构造环境 西藏措勤区 |
An Approach to Geological Features and Tectonic Setting of Ophiolite Suite in Coq~n, Tibet |
| |
| XIE Yun-xi JIANG Yuan-sheng.An Approach to Geological Features and Tectonic Setting of Ophiolite Suite in Coq~n, Tibet[J].Acta Geologica Sichuan,2011(3):255-259. |
| |
| Authors: | XIE Yun-xi JIANG Yuan-sheng |
| |
| Institution: | XIE Yun-xi JIANG Yuan-sheng(Regional Geological Surveying Team,BGEEMRSP,Chengdu 610213) |
| |
| Abstract: | The Coqen region lies in the Yarlung Zangbo basic-ultrabasic rock belt-Nyainq6ntanglha island arc magmatic belt characterized by strong magmatic activity during Jurassic-Quaternary. Intrusions dominated by intermediated and acid intrusions over basic-ultrabasic intrusions were emplaced during Yenshanian and Himalayan epochs. The basic-ultrabasic intrusions as parts of the Ngamring ophiolite suite or Anba ophiolite suite were emplaced in an ocean ridge setting transitional to oceanic islands during the early Late Cretaceous. |
| |
| Keywords: | basic-ultrabasic rock ophiolite tectonic setting Coqen region Tibet |
| 本文献已被 CNKI 维普 等数据库收录！ |
