Sidgren, Ann-Sofie, Laurence Page, and Adam A Garde. “New Hornblende and Muscovite 40Ar 39Ar Cooling Ages in the Central Rinkian Fold Belt, West Greenland”. GEUS Bulletin 11 (December 5, 2006): 115–124. Accessed October 22, 2025. https://geusbulletin.org/index.php/geusb/article/view/4920.