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为安熔结集块岩,安、英安及流纹角砾岩以及流纹熔结凝灰岩。