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质熔结集块岩,质、英质及流纹质火角砾岩以及流纹质熔结凝灰岩。