Taken together, they are the remains of magma intrusions metamorphosed to granulite grade. Granites are associated with charnockite bodies and granulite facies metamorphism. Orthopyroxene is an important constituent of some metamorphic rocks such as granulite. These rocks are frequently metamorphosed greenschist, amphibolite, and granulite facies. It contains a late Archean granulite basement. This crystalline basement is made up of amphibolite to granulite facies, mostly forming domes. Eclogite may completely retrogress to amphibolite or granulite during exhumation. Other deposits include migmatite rocks, to a lesser extent also amphibolite, serpentinite, granulite, and pegmatite. There is a third block called the Eastern Ghats Granulite Belt (EGB). It characteristically occurs in metamorphic rocks of granulite to amphibolite facies commonly exhibiting antiperthite texture. However, eclogite and granulite are roughly equivalent mafic rocks. In dry rocks, however, additional heat (and burial) may result in granulite facies conditions. Some show granulite facies metamorphism, but most are the slightly lower temperature amphibolite facies.