Title: Glacial geology and implications for drift prospecting in the Lac de Gras, Winter Lake, and Aylmer Lake map areas, central Slave Province, Northwest Territories
Abstract: As a contribution to the Slave Province NATMAP, Terrain Sciences mapped three 1:250000 map areas (NTS 86A, 76D, and 76C) in the Lac de Gras area with the objective of providing a regional framework for geological interpretation and drift prospecting. This report documents the preliminary results from the first field season. Till is the most common surficial sediment and only one till sheet was identified. This till sheet represents several different directions of transport, including southwest, west, and northwest. Three broad zones of dominant flow were defined throughout the area, each requiring a different approach for drift prospecting. As well, glacial transport distances were evaluated, based on the lithology of pebbles in the till which indicated both local and distant transport.