岩相学特征表明，该火山群为典型的钙碱性系列玄武岩安山岩英安岩弧火山岩组合。
The (examination) of the petrography shows that the volcanic terrains in Tengchong are typical of the basalt - (andesite) - (dacite) arc volcanic rock associations of the calc-alkaline series.
并以四川红系列花岗岩石材加工为例，说明了花岗岩岩相学特征对岩石可锯性影响的程度。
The example to process the Sichuan series of red granites indicates that the sawability will be effected by the petrographic characters of the granites.
详细的岩相学研究表明，TTG岩类中存在岩浆结晶的绿帘石、角闪石和黑云母等。
The petrographical facies studies indicate that the magma-crystallined epidotes , bornblendesand biotites were distributed in TTG rocks.
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