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Abstract

abstract

The complexly deformed Sverdrupfjella Group comprises various tonalitic, quartzofeldspathic and metapelitic gneisses with which are intercalated minor but extensive marbles and cafe-silicate gneisses. These gneisses were derived from volcanic and sedimentary precursors. The Group was intruded over a long time-span by maficlultramafic dykes and sheets, monzonites and granites. The latter are characterized by their tabular geometry. Late- and post-tectonic intrusions include alkaline complexes and swarms of dolerite dykes. Remnants of granulite facies are preserved in the northeastern nunaraks.