metamorphic formation

常見例句

The Jingshan and Jiaodong Groups metamorphic green formation is the source bed of the gold mineralization in this region.
區(qū)內(nèi)荊山群和膠東群變質(zhì)綠巖建造是金礦化的礦源層。
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The upper part of it is a suit of metamorphic flysch formation, and the lower part, metamorphic volcanic-sedimentary rocks.
其上部為一套變質(zhì)的復(fù)理石建造，下部為變質(zhì)的火山-沉積巖建造。
What kinds of metamorphisms are involved in the formation of metamorphic rocks in this area.
這個地區(qū)的變質(zhì)巖的形成都涉及到那些變質(zhì)作用呢？