Open AccessPreliminary report on K/Ar datings in the south-eastern part of the Ivigtut region
Author(s) -
Otto N. Larsen
Publication year - 1971
Publication title -
rapport
Language(s) - English
Resource type - Journals
eISSN - 2597-2944
pISSN - 0418-6559
DOI - 10.34194/rapggu.v35.7266
Subject(s) - greenschist , geology , epidote , fjord , metamorphic facies , metamorphic rock , facies , geochemistry , geomorphology , paleontology , quartz , chlorite , structural basin
In the lvigtut region the Ketilidian supracrustal rocks are exposed mainly on Arsuk ø and in a narrow belt stretching along the margin of the Inland lee (Berthelsen & Noe-Nygaard, 1965; Windley et al., 1966). This belt narrows to less than 1 km along the north side of Qôrnoq fjord. The metamorphic grade of the supracrustal rocks increases southwards from lower greenschist facies in northern Grænseland and on Midternæs to epidote amphibolite facies around Qôrnoq fjord and Kiniilik.