北祁连早古生代香毛山混杂岩的有关问题ON THE EARLY PALAEOZOIC XIANGMAOSHAN FORMATION IN THE WESTERN PART OF NORTHERN QILIAN MOUNTAINS
王永和,焦养泉,李建星
摘要(Abstract)：
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(KeyWords)： 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
基金项目(Foundation): 中国地质调查局1/5万《红坑子—国营鱼儿红牧场幅》区域地质调查项目资助
作者(Author): 王永和,焦养泉,李建星
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