AbstractsEarth & Environmental Science

A study of part of the Kaniapiskau system northwest of Attikamagen Lake, New Quebec.

by Robert Walter. Kirkland




Institution: McGill University
Department: Department of Geological Sciences.
Degree: PhD
Year: 1950
Keywords: Geological Sciences.
Record ID: 1516577
Full text PDF: http://digitool.library.mcgill.ca/thesisfile124360.pdf


Abstract

This report is based on field work by the writer during the summers of 1948 and 1949, and on subsequent laboratory investigations at McGill University. The map-area forms part of a concession in New Quebec granted to the Hollinger North Shore Exploration Company Limited. The concession includes part of the “Labrador Trough” which contains a folded and faulted assemblage of Precambrian sedimentary and volcanic rocks (Figure 1). The first part of the report deals with the general character of the country and the regional geology. The second part is concerned with a detailed study of part of the Kanispiskau system (Late Precambrian) northwest of Attikamagen Lake, and in particular with the iron-formation and the iron ore deposits which occur within it. The field work consisted of detailed mapping in the vicinity of several iron ore occurrences which lie to the northeast of the main ore zone in the Labrador Trough (Figures 2 and 3). Mapping was done by plane-table on the scale one inch equals 200 feet and orientation was maintained from known azimuths of the sun. In addition, a few short pace and compass traverses were made to complete the local geology. Two triangulation stations were erected so that the survey could be tied into the main triangulation system farther west. Accompanying the report are two maps of the local geology on the scale one inch equals 1000 feet. The contours are based on assumed elevations of 1725 feet for Snow and Bruin lakes.[...]