Igneous structures and textures in the Majorqap qâva outcrop of the Fiskenæsset anorthosite complex

Abstract

Primary structures and textures are extensively preserved in the large Måjorqap qâva outcrop of the early Precambrian basic igneous complex of Fiskenæsset. The outcrop is situated on the northern side of the head of Fiskenæsfjorden (63°16'N; 50°05'W) and is sub-rectangular in outline, 7 kilometres long and 5 kilometres wide (plate 1). Its form is basin-shaped and a section of 1000 metres is exposed through it from the summit of Majorqap qava to the floor of a narrow valley which cuts diagonally across the outcrop (plate 2).