Open AccessNew field relations from the early Precambrian of West Greenland
Author(s) -
B. F. Windley
Publication year - 1968
Publication title -
rapport
Language(s) - English
Resource type - Journals
eISSN - 2597-2944
pISSN - 0418-6559
DOI - 10.34194/rapggu.v15.7171
Subject(s) - anorthosite , norite , geology , precambrian , gneiss , geochemistry , plagioclase , basalt , gabbro , paleontology , metamorphic rock , quartz
The following new field relations were found this summer in the region between Ravns Storø and Sukkertoppen. On western Nordland there is an anorthosite horizon with a maximum width of 6 km and a minimum length of 25 km which is the widest anorthosite so far known in West Greenland. This is a layered anorthosite grading into anorthositic norite which has been migmatised marginally by the surrounding hypersthene gneisses, but which is well preserved in its centre.