Isotopic evidence for the age of the Røde Ø Conglomerate, inner Scoresby Sund, East Greenland

On the basis of sulphur and strontium isotope data of sedimentary gypsum it is suggested that the Røde Ø Conglomerate at C. Hofmann Halvø, East Greenland was deposited during the mid- to late Permian. The δ³⁴S values of +11.4‰ and +11.9‰ are comparable to late Permian seawater values whereas ⁸⁷Sr/⁸⁶Sr ratios of 0.7188137 and 0.7191609 indicate the influence of freshwater. This proposed mid- to late Permian age for the Røde Ø Conglomerate makes it an equivalent to the Huledal Formation in the Jameson Land - East Greenland basins to the north-east.