Silicic magmatism associated with Late Cretaceous rifting in the Arctic Basin-petrogenesis of the Kap Kane sequence, the Kap Washington Group volcanics, North Greenland

►Two groups of A-type silicic lavas on Kap Kane, North Greenland ►Mildly peralkaline lavas formed by fractional crystallisation of basalt ►Weakly peraluminous lavas derived by partial melting of hybridised, young mafic crust ►Patch perthites developed during hydrothermal alteration of feldspars ►Disturbance of Sr isotope system during post-magmatic alteration