(a) Geological map of the Fiskenæsset region in SW Greenland. The red box on the Greenland outline highlights the study region. The large red box and star marks the location of collected outcrop samples and drill core 21, respectively. (b) Geological map of Qeqertarssuatsiaq Island showing sample locations and lithologies reported in this study. Map is modified from mapping and compilation by the Geological Survey of Denmark and Greenland (Keulen et al., 2010).