The other type, with relatively low SiO 2,high MgO,FeO and TiO 2 and associated with brown volcanic glass-augite-magnetite assemblage and high V and Ni in the sedimentary layer, belongs to a middle volcaniclastic layer.

• 另 1种以火山玻璃相对低含SiO2 ,高MgO ,FeO ,TiO2 为特征 ,并与褐色玻璃 普通辉石 磁铁矿组合和高V ,Ni的沉积层伴生 ,属中性火山碎屑沉积。