Geochemical Types of Granitization

摘要

Fields of nebulites composed of (1) trondhjemite— and granite—gneiss and (2) enderbite— and charnock-ite—gneiss are widely abundant in the zones of ultrametamorphism. The first are formed under conditions of the amphibolite facies; the second, under conditions of granulite facies. It was previously demonstrated that the formation of such autochthonous granitoids was controlled by infiltration granitization, which was accompanied by progressing partial melting resulting in the appearance of magmatic chambers [1].