subvolcanic cryptoexplosior breccia 次火山隐爆角砾岩
A series of explosive breccia pipes, related to acid rich-alkaline subvolcanic rocks of Yanshan period in origin, occur in the Northeast Shanxi Province.
晋东北地区出露一系列与燕山期富碱的酸性、中酸性浅成相-次火山相有成因联系的爆破角砾岩筒。
The Longtoushan gold deposit is related to late Yanshanian subvolcanic rocks such as rhyolitic porphyry and breccia lava.
龙头山金矿床与燕山晚期流纹斑岩、角砾熔岩等次火山岩相有关。
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