dacite

The first rock is mainly andesite clinkering agglomerate, andesite breccia, dacite breccia, rhyolite breccia and rhyolite clinkering tuff.

正常火山碎亚类类型主要为山熔结集块,山、英流纹火山角砾以流纹熔结凝。

Volcanicity was violent during the Early Carboniferous in Santanghu region.The volcanic rocks consist of basalts,andesites and dacite liparite,with andesites playing the main part.

三塘湖地区早炭世火山活动强烈，发育以山类为主的玄武、山、英流纹的组合。