dacite

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

正常火碎岩亚类岩石类型主要为熔结集块岩,、英及流纹火角砾岩以及流纹熔结凝灰岩。

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活动强烈，发育以岩类为主玄武岩、岩、英流纹岩岩石组合。