Geological and radiometric mapping of the Motzfeldt Centre of the Igaliko Complex, South Greenland

Abstract

The geological and radiometric mapping of the Motzfeldt Centre was commenced in 1982 as part of the extended Syduran project under the Ministry of Energy's Research Programmes of 1981 and 1982 (Armour-Brown et al., 1983). The purpose of the study was to make a detailed geological and radiometric map of the centre with a view to provide a reliable reference framework for the evaluation of the economic mineral potential of the centre where an extensive Th-U-Zr-Nb-REE mineralisation was discovered by the reconnaissance surveys of the Syduran project, which was partly financed by the European Economic Communities during the period 1st Dec. 1979 - 1st Dec. 1980 under article 70 (Armour-Brown et al., 1982, 1983). Apart from a short visit by Agnete Steenfelt, who carried out a detailed rock-sampling programme of a section in the north-east part of the centre, no field work was done during the 1983 season. The geological mapping of the centre is planned to be finished during the 1984 season. The airborne gamma-spectrometric and field mapping data of the 1982 season have been processed and compiled, so we are able to summarise the most important results.