host rock

基本解释

The main host rock is trachyte with distinctive pockmark structure.
含矿主岩主要为粗面岩，具有独特的“麻子构造” ；
There are many similarities of the REE distribution patterns and incompatible element patterns between the enclave and the host rock ( subvolcanic porphyric granodiorite ).
包体与寄主岩（次斑状花岗闪长岩）的稀土元素曲线和不相容元素蛛网图的形态非常相似。
Their petrological and geochemical characters suggest that the host rock of the xenoliths is basanite, and the magma has not experienced obvious differentiation and assimilatory contamination.
岩石学和地球化学特征揭示包体寄主岩为碧玄岩，岩浆没有经历明显分异和同化混杂作用。

He's a rock critic for the Chicago Sun Times and co-host of the public-radio rock 'n' roll talk show Sound Opinions.
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