One classification scheme for this material includes a crustal S-type produced by anatexis or ultra-metamorphism.
One classification scheme for this material includes a crustal S-type produced by anatexis or ultra-metamorphism. This origin is supported by observations of migmatites, whose neosomes have this rock's composition. It is often found in association with quartz monzonite and pegmatites, whose origins are associated with magma of this composition. Often grading into diorite around intrusions, this rock contains both orthoclase and plagioclase feldspar, as well as 20-60% quartz, giving it a felsic composition. FTP, name this intrusive equivalent of rhyolite, the most common rock in the continental crust.
One classification scheme for this material includes a crustal S-type produced by anatexis or ultra-metamorphism.
{granite}