甘肃北山北部双沟山地区发现泥盆系雀儿山群地层DISCOVERY OF THE DEVONIAN QUEERSHAN GROUP IN THE SHUANGGOUSHAN AREA IN THE NORTH OF BEISHAN,GANSU
张国英
摘要(Abstract)：
在《红宝石幅》区域地质调查过程中,发现在甘肃北山双沟山地区分布着一套灰绿色中性、中酸性火山熔岩及其凝灰岩地层,通过岩石地层、生物化石及地层年代等方面的研究,经区域地层对比划归雀儿山群,形成时代确定为早泥盆世。该群的确定对恢复哈萨克斯坦板块南缘区域地质演化历史有重要意义。
关键词(KeyWords)： 雀儿山群;泥盆纪;北山;双沟山;甘肃
基金项目(Foundation): 中国地质调查局1/25万《红宝石幅》区域地质调查项目
作者(Author): 张国英
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