Field mapping in the Scoresby Sund area, East Greenland

Abstract

The five year field mapping programme in the Scoresby Sund area which was begun in 1968 continued during the 1969 season. This season the expedition was based on the 1855 ton polar vessel "Magga Dan", which carried two Bell helicopters and supported three smaller boats; 38 expedition members and 30 crew members participated in the expedition which lasted 63 days. The expedition members included 15 two-man geological parties, of which 7 mapped in the Caledonian crystalline complex north and south of outer Nordvestfjord, two in the crystalline complex in south-western Liverpool Land, one party in Tertiary basalts south-west and south of Hall Bredning; one party made Quaternary geological investigations on eastern Milne Land and western Jameson Land, and one party undertook special geochronological investigations on Bjørneøer; the remaining 3 parties mapped in the Upper Palaeozoic and Mesozoic sediments of central and northern Jameson Land (see K. Perch-Nielsen, this report), Approximately 7000 km² were mapped in the crystalline complexes, and about 2000 km² in the Mesozoic sediments at a scale of 1:50 000. After two seasons mapping the field work between 71°15' and 72°00' N is almost completed.