Marine geophysical survey between 68°30'N and 73°30'N, West Greenland

Abstract

An offshore geophysical programme was carried out during the summer to extend the mapping of the Cretaceous-Tertiary onshore sedimentary basin in West Greenland to the adjacent fjord areas, and to investigate the relationship of the onshore sediments and volcanics to offshore sediments to the west (Ross & Henderson, 1973). Between 4th July and 2nd August a four-man party led by the writer and Birger Larsen (Danmarks Tekniske Højskole) on the chartered Norwegian sealer "Brandal" completed about 3000 km of seismic and magnetic profiling, and 600 km of magnetic profiling, in coastal areas between 68°30'N and 73°30'N. In general, work was concentrated on the fjord areas and close inshore, particularly in Disko Bugt, Vaigat and Umanak Fjord, but one profile was continued 120 km west from Upernavik Isfjord. Two sonobuoy refraction profiles were recorded and a number of bottom samples were collected.