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

正常石型主要为安质熔结集块,安质、英安质及流纹质角砾以及流纹质熔结凝灰。

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活动强烈，发育以安为主的玄武、安、英安流纹的石组合。