Continued mapping of the pre-3760 m.y. old supracrustal rocks of the Isua area, southern West Greenland

This note reports on the second season's mapping of the Isua supracrustal belt of the Godthåb district (see Allaart, 1975). FolIowing the discovery of the major banded ironstone occurrence at Isua (Keto, 1970), various investigations in the area have been carried out (Moorbath et al., 1973; Bridgwater & McGregor, 1974; Jarnes, 1975). The present mapping is part of the Survey's systematic mapping programme in West Greenland.