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玉树地区各时代火山岩均较发育,火山活动是多期的。通过我队在该区开展区调工作,才证实了喜山期火山岩的存在。喜山期火山岩主要分布在玉树以南,上拉秀至囊欠一带,以囊欠盆地者最为发育。本文主要结合区调所取得的部分成果资料,对囊欠盆地的喜山期火山岩杂岩的岩石学,岩石化学特征,火山活动规律以及成矿远景,进行初步分析和探讨。
Yushu volcanic rocks are more developed in all ages, volcanic activity is multi-phase. Through our team in the area to carry out regional transfer work, only confirmed the existence of volcanic rocks in the Himalayan period. Himalayan volcanic rocks are mainly distributed in the south of Yushu, the pull-up show to the capital owed to the area, the most developed to those who owe the basin. In this paper, we mainly analyze the petrological, petrochemical characteristics, volcanic activity and prospect of volcanic rocks in the Himalayan volcanic complex that owe to the basin due to some results obtained from the regional adjustment.