AbstractsEarth & Environmental Science

In the summer of 1938 the Geological Survey of Canada, as a result of prospecting activity and the discovery of favorable mineralization in the Yellowknife and Gordon lake areas north of Great Slave Lake, sent several field parties into the areas to map the more promising sections in detail. [...] The writer had the opportunity to study the sediments underlying much of the area. This study, with laboratory investigation, is the basis of this thesis. Suites of specimens were collected from which thin sections were prepared by the Geological Survey of Canada. [...] The Gordon lake area, approximately 564 square miles, is bounded by longitudes 113° and 113°30' and latitudes 62°45' and 63°15'. It is about 50 miles northeast of Yellowknife bay, Great Slave lake, N.W.T. Access to the area is by boat or plane from Fort McMurray. Canoe routes into the area are numerous. During the winter months access is entirely by plane. [...] In general, the area has the topography typical of the Canadian Shield. It is a moderately flat, peneplaned surface, modified slightly by glacial deposits. In detail, however, the component parts of this surface are quite irregular and rugged. The greatest local relief is about 325 feet. [...]