Burwell, A., Friend, C. and Hughes, D. 1978. Late Archaean metamorphic Rb-Sr isochron ages from basic and ultrabasic rocks in the Bjørnesund – Ravns Storø region, southern West Greenland. Rapport Grønlands Geologiske Undersøgelse. 90, (Dec. 1978), 135–141. DOI:https://doi.org/10.34194/rapggu.v90.7612.