Geological Survey of Canada, Current Research (Online) no. 2002-C15

Geological Survey of Canada, Current Research (Online) no. 2002-C15
Author: Sandra E. Johnstone
Publisher: Natural Resources Canada
Total Pages: 11
Release: 2002
Genre: Geology, Structural
ISBN: 0660187353

This report summarizes observations & structural data collected in the area of the Walker Lake shear zone in the Committee Bay supracrustal belt, central Nunavut. It first reviews the general geology of the metasedimentary & volcanic rocks of the Prince Albert group and the intrusive rocks (tonalite, granite) which were observed in the shear zone. It then describes the three generations of ductile structures that were identified in proximity to the shear zone, and offers some preliminary interpretations regarding the relationship of the shear zone to regional deformation.

Geological Survey of Canada, Current Research (Online) no. 2002-C14

Geological Survey of Canada, Current Research (Online) no. 2002-C14
Author: Trevor G. MacHattie
Publisher: Natural Resources Canada
Total Pages: 9
Release: 2002
Genre:
ISBN: 0660187345

Komatiite units dominate Archean volcanic successions in the Laughland Lake and Walker Lake map areas of the Committee Bay region, central Nunavut. This study describes results of regional & local mapping of some well-preserved komatiite sequences in those areas, particularly in the Laughland Lake area where the majority of the better-preserved komatiite units are found. Structural & stratigraphic relationships are also discussed.