Drift-prospecting investigations in the Yellowknife Greenstone Belt, Northwest Territories

Surficial geology studies and geochemical analyses of till and organic materials provide new baseline data for mineral exploration in the Yellowknife Greenstone Belt. The mapped pattern of ice-flow indicators throughout the study area is generally consistent with the dominant regional flow and confirms a generally southwestward ice movement. Minor variations indicate local late-glacial flow ranging from west-northwestward to west-southwestward. Pebble-lithology studies indicate that dispersal patterns in till reflect the last southwestward flow. Metasedimentary and volcanic (nongranitic) clasts predominate in most areas underlain by both metasedimentary–volcanic and granitic bedrock, and suggest transport distances of at least 25 km for some clasts. Gold-grain counts of the heavy-mineral fraction of till indicate that background values over granitic terrain for each sample is approximately 0 to 1 grain/10 kg of till. Anomalous concentrations of 19 gold grains/sample in granitic terrain southeast of Drybones Bay are currently being investigated. 2001-C1 D.E. Kerr et al. 1 CURRENT RESEARCH RECHERCHES EN COURS 2001 Article Article Titles Titres Purchase Information Information pour acheter 1 Box 2547, Yellowknife, Northwest Territories 2 Box 1778, Yellowknife, Northwest Territories