The Precambrian rocks of the Egedesminde–Christianshåb area, West Greenland

Abstract

Most of the area described consists of quartzo-feldspathic gneisses with zones and bands of mica schist and pelitic gneiss, amphibolite, and a few thin marble and calc-silicate bands. Granitic rocks are also present, but are of minor importance. A large quartz diorite body is thought to represent a folded and metamorphosed intrusive sheet. Two metamorphic complexes are present, a predominantly amphibolite facies complex and a granulite facies complex. Migmatites are a prominent feature in some areas of mica schist and pelitic gneiss. At least two, and probably three, deformation phases are represented. A good correlation has been established with adjoining areas.