Open AccessGranitisation of basic rocks in the Bjørnesund area, near Fiskenæsset, West Greenland
Author(s) -
Howard R. Williams
Publication year - 1976
Publication title -
rapport
Language(s) - English
Resource type - Journals
eISSN - 2597-2944
pISSN - 0418-6559
DOI - 10.34194/rapggu.v73.7420
Subject(s) - gneiss , metamorphism , geology , geochemistry , metamorphic facies , metamorphic rock , petrology , facies , geomorphology , structural basin
The area studied (Fig. 22) is dominantly composed of strongly and poorly banded gneisses with intercalated supracrustal amphibolites, and was finally metamorphosed in upper-amphibolite facies about 2.7 x 10^9 y ago. Early large-scale isoclinal folds formed during high-grade metamorphism have affected the strongly banded gneisses and amphibolites, but predate the younger, poorly banded gneisses, which were subsequently deformed and metamorphosed along with the banded gneisses and amphibolites. (Williams, 1973).