Volcanic rocks in Fanhe occurred in the belt of hedreocraton which was the product during strong activity of aulacogen.
凡河地区火山岩形成于大陆克拉通内的活动带，即裂陷槽强烈活动阶段的产物。
Volcanic rocks in Fanhe occurred in the belt of hedreocraton which was the product during strong activity of aulacogen.
凡河地区火山岩形成于大陆克拉通内的活动带，即裂陷槽强烈活动阶段的产物。
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