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| 北祁连早古生代香毛山混杂岩的有关问题 | |
| 引用本文： | 王永和,焦养泉,李建星. 北祁连早古生代香毛山混杂岩的有关问题[J]. 地层学杂志, 2007, 31(4): 368-375,I0008 |
| 作者姓名： | 王永和 焦养泉 李建星 |
| 作者单位： | 中国地质大学,湖北武汉,430074;西安地质矿产研究所,陕西西安,710054;中国地质大学,湖北武汉,430074;西安地质矿产研究所,陕西西安,710054 |
| 基金项目： | 中国地质调查局1/5万区域地质调查项目 |
| 摘 要： | 对祁连山西段香毛山组正层型及其周边地区的地质调查和岩石学、地层古生物学研究发现,原划香毛山组并非正常的正式岩石地层单位,而是一个奥陶系蛇绿构造混杂岩带。在介绍该混杂岩的物质组成的基础上,对其构造性质进行了讨论。认为该混杂岩带是奥陶纪北祁连洋壳向北俯冲消减——镜铁山—捷达坂微陆块与东大窑—妖魔山—石灰沟岛弧带碰撞而形成的地壳缝合带。 |
| 关 键 词： | 正层型 蛇绿岩 构造混杂岩 香毛山组 奥陶系 早古生代 北祁连西段 甘肃 |
| 文章编号： | 0253-4959（2007）04-0368-08 |
| 修稿时间： | 2007-03-202007-07-09 |
ON THE EARLY PALAEOZOIC XIANGMAOSHAN FORMATION IN THE WESTERN PART OF NORTHERN QILIAN MOUNTAINS |
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| WANG Yong-he,JIAO Yang-quan,LI Jian-xing. ON THE EARLY PALAEOZOIC XIANGMAOSHAN FORMATION IN THE WESTERN PART OF NORTHERN QILIAN MOUNTAINS[J]. Journal of Stratigraphy, 2007, 31(4): 368-375,I0008 | |
| Authors: | WANG Yong-he JIAO Yang-quan LI Jian-xing |
| Abstract: | Based on regional survey, lithostratigraphy, and biostratigraphy,the Xiangmaoshan Formation in the western part of northern Qilian Mountains is interpreted as an Ordovician ophiolite melange. This melange was first formed in the northern consummation and subduction zone of the northern Qilian ocean and island arc. Susequently, the collision with the Jingtieshan landmass and island arc belt led to the tectonically complex melange. |
| Keywords: | stratotype ophiolite tectonic complex rock Xiangmaoshan Formation Ordovician Early Palaeozoic Qilian Mountain |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |