Boak, J.L, R.F Dymek, and L.P Gromet. “Petrology and Rare Earth Element Geochemistry of Clastic Metasedimentary Rocks from the Isua Supracrustal Belt, West Greenland”. Rapport Grønlands Geologiske Undersøgelse 112 (December 31, 1983): 23–33. Accessed November 27, 2024. https://geusjournals.org/index.php/rapggu/article/view/7810.