早石炭世白山组火山岩是甘肃北山地区分布最为广泛的晚古生代火山岩。
Volcanic rocks of early Carboniferous Baishan Formation were widely distributed in the Beishan area of Gansu Province.
早石炭世白山组火山岩是甘肃北山地区分布最为广泛的晚古生代火山岩。
Volcanic rocks of early Carboniferous Baishan Formation were widely distributed in the Beishan area of Gansu Province.
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