The migmatites, granites and metasediments of Danmark Ø and adjacent areas of Milne Land and Gåse1and, East Greenland Caledonian fold belt

Abstract

The mapped area (Danmark Ø, part of south-east Milne Land and eastern Gåseland) consists mainly of migmatites and granitic rocks forming part of a migmatitic zone within the East Greenland CaIedonian fold belt. The area ean be divided into various granitic and syenitic rocks, strongly migmatized paragneisses, a metasedimentary sequence, garnetiferous augen granite sheets, and a thrust sheet of hornblende quartz diorite. Some rock units may have been formed in Precambrian time, and others during the Caledonian orogeny. Large scale E-W trending folds occur in eastern Gåseland and small scale folds throughout the area. Mineral assemblages suggest several metamorphic events. No indications of economic mineralization were found.