摘要
通过野外调查在甘肃陇南的文县阳山金矿东北磨坝—观音坝一带首次发现一大套震碎砾岩,这套砾岩由于覆盖在白垩纪红色砾岩之下,故而一直把其当作白垩纪砾岩处理。通过作者参加该项目的研究后认为,是一套震碎角砾岩,这种震碎角砾岩,在国内外尚未见公开报道。它是地质历史上一次浅源强烈地震的岩石记录,反映了该地区一次重要的地震构造运动,同时本文对该地区的震积岩进行了沉积序列及岩石类型划分,这种观点对促进陕甘川地震历史的认知有重要的补充作用。
It is first time to discover a set of shatter conglomerate during the field investigation in Wenxian County of Gansu Province.The survey results support this shatter conglomerate is the rock record reflecting the strong earthquake of shallow source in this area,and overthrow the conclusion which this conglomerate was Cre-taceous conglomerate because this conglomerate underlain Cretaceous red conglomerate.
出处
《甘肃地质》
2010年第3期76-80,共5页
Gansu Geology
基金
甘肃省武都幅1:25万区域地质调查及地壳稳定性评价
关键词
震碎砾岩
古地震事件
甘肃文县
shatter conglomerate
shallow earthquakes
Wenxian county in Gansu Province
