The Precambrian rapakivi suite and surrounding gneisses of the Kap Farvel area, South Greenland

Abstract

The main geological events recognised from the southern tip of Greenland are as follows: Post-plutonic phase. Late-Phanerozoic faulting and emplacement of NNW-SSE and E-W dolerite dykes. Gardar (1000-1250 m.y.) faulting and emplacement of one or more generations of olivine dolerite dykes (dominantly N-S). Late-plutonic rapakivi suite: Emplacement of appinitic hornblende-diorite sills. Emplacement of rapakivi granites, monzonites, diorites and norites (circa 1650 m.y.). Migmatite complex: Migmatisation, formation of concordant granite sheets, amphibolite facies metamorphism, main phase(s) of folding. Supracrustal series of semipelites overlain by marbles, conglomerates, psammites and basic volcanics.