Nutman, A.P, D Bridgwater, E Dimroth, R.C.O Gill, and M Rosing. 1983. “Early (3700 Ma) Archaean Rocks of the Isua Supracrustal Belt and Adjacent Gneisses”. Rapport Grønlands Geologiske Undersøgelse 112 (December). Copenhagen, Denmark:5-22. https://doi.org/10.34194/rapggu.v112.7809.