The pyroclastic rocks dominated by crystal debris, lithic intra-dissolution pore and volcanic ash devitrified pore consist mostly of tuff, tuffite and volcanic breccia;

• 火山碎屑岩主要为凝灰岩、沉凝灰岩和火山角砾岩：熔岩类主要为安山岩和玄武岩。