Earth Sciences Report 1958-03

Earth Sciences Report 1958-03

ESR 1958-03

Geology of the Andrew Lake, North District

Author(s) Godfrey, J.D. Date 1961-01-01

A map on a scale of two inches to one mile is presented on which 12 map units are distinguished. These units constitute three principal rock groups: metasedimentary and associated rocks, porphyroblastic biotite granites and granite gneiss. Each map unit is described in terms of its distribution, hand specimen properties, structural characteristics and contact relationships. Chemical and modal analyses are given for the granitic and gneissic rock units. The usefulness of aeromagnetic surveys and aerial photographs is indicated in the determination of regional bedrock structures and the distribution of principle rock types. Minor sulfide mineralization and radioactivity are noted.

Godfrey, J.D. (1961): Geology of the Andrew Lake, north district; Research Council of Alberta, RCA/AGS Earth Sciences Report 1958-03, 35 p.