The Tianshan basalts may result from a mantle plume.
天山玄武岩可能是产生于地幔柱头.
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The basalts were intruded by numerous silica dykes, some of which terminate in the sedimentary layers.
玄武岩被无数的二氧化硅矿脉侵入, 其中一些终止于沉积岩层.
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Yingcheng group's volcanic rocks in Shengping field areof rhyolites, andesites, basalts, felsites and volcanic fragmental rocks.
升平气田白垩系营城组火山岩主要为流纹岩 、 安山岩 、 玄武岩 、 霏细岩及火山碎屑岩.
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