Alkalic volcanic rocks of the Early Silurian Taohekou Formation are distributed in the northern Dabashan area of the southern Shaanxi, with a stable horizon and evidently lithological indicators.
陕西南部北大巴山地区早志留世滔河口组碱基性火山岩，分布层位稳定，岩性标志特征。
Alkalic volcanic rocks of the Early Silurian Taohekou Formation are distributed in the northern Dabashan area of the southern Shaanxi, with a stable horizon and evidently lithological indicators.
陕西南部北大巴山地区早志留世滔河口组碱基性火山岩，分布层位稳定，岩性标志特征。
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