dacite

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

正常火山碎亚类石类型主要为安山质熔结集块,安山质、英安质纹质火山角砾纹质熔结凝灰。

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.

三塘湖地区早石炭世火山活动强烈，发育安山类为主的玄武、安山、英安纹的石组合。