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

Author : Sandra E. Johnstone

Publisher : Natural Resources Canada

Page : 11 pages

File Size : 27,73 MB

Release : 2002

Category : Geology, Structural

ISBN : 0660187353

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Book Description

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-C2

Author : Jim Antonio Renaud

Publisher : Natural Resources Canada

Page : 13 pages

File Size : 30,88 MB

Release : 2002

Category : Metamorphic rocks

ISBN : 0660187221

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Book Description

The Aylmer Lake volcanic belt, located north of the north-east end of Great Slave Lake, defines an upward-facing structural dome intruded in its core by a number of granitoid plutons and overlain by multiply folded metaturbidite units. This paper provides a summary of field observations of the belt from the 2000-01 field seasons and incorporates preliminary geochemical data from samples collected in 2000. Information is included on rock types & stratigraphic relationships in the Aylmer Lake area, on whole-rock analyses of a representative selection of rock types from the belt, and on structural & metamorphic elements of the north-east Walmsley Lake area (located just west of the belt).