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本文通过七条剖面的测制和三十件岩石化学样品及五百多岩石薄片以及区域资料对比的综合研究,认为本组火山岩系属弱碱性—钙碱性,以弱碱性火山岩为主。这相当于岛弧近陆一侧板块俯冲晚期阶段的火山活动产物。
Based on a comprehensive study on the determination of seven profiles and the comparison of thirty petrochemical samples with over 500 rock fragments and regional data, the volcanic rocks of this group are considered to be weakly alkaline-calc-alkaline with weakly alkaline volcanic rocks. This is equivalent to the volcanic activity of late stage subduction of the plate near the continental arc.