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

正碎屑岩亚类岩石类型主要为质熔集块岩,质、英质及流纹质角砾岩以及流纹质熔岩。

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活动强烈，发育以岩类为主的玄武岩、岩、英流纹岩的岩石组合。