The rapakivi granites have a number of petrological peculiarities.
环斑花岗岩具有若干岩石学的特征。
2
This paper briefly demonstrates that the muscovite(two-mica) granite is a petrological record of intracontinental subduction.
本文简要地论述了白云母（二云母）花岗岩是陆内俯冲的岩石学记录。
3
The actual chemical make-up of rocks is complex, so the conventions of petrological analysis pretend that these metals are present in basalt as their oxides.