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

正常火碎屑岩亚岩石要为质熔结集块岩,质、英质及流纹质火岩以及流纹质熔结凝灰岩。

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，发育以岩为的玄武岩、岩、英流纹岩的岩石组合。