Kalsbeek, F, and B.E Leake. 1970. “The Chemistry and Origin of Some Basement Amphibolites Between Ivigtut and Frederikshåb, South-West Greenland”. Bulletin Grønlands Geologiske Undersøgelse 90 (November). Copenhagen, Denmark:1-36. https://doi.org/10.34194/bullggu.v90.6630.