The Tongbomiao Formation consists of pyroclastic, volcanic-sedimentary and terrigenous clastic rocks in Beier sag, Hailaer Basin.

• 摘要海拉尔盆地贝尔凹陷铜钵庙组发育一套火山碎屑岩类、火山-沉积岩类和少量的陆源碎屑岩岩石组合。