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Geology, Montresor River area, Nunavut, parts of NTS 66-H and NTS 66-I / [authors, J.A. Percival ... [et al.]].: M183-1/231-2015E-PDF

“The Montresor River area (parts of NTS 66-H/13, 14, 15, 16, and NTS 66-I/1, 2, 3, 4, 5, 6, 7, 8), part of the Rae structural province, is underlain by granitic rocks of Archean (ca. 2.6 Ga) age and the Paleoproterozoic (<2.19 Ga) Montresor group of metasedimentary rocks. Quartzite, dolostone and metapelite of the lower Montresor group are structurally imbricated (D1) with granitic gneisses and metamorphosed to the amphibolite facies. This structural footwall complex is separated from greenschist-facies rocks of the upper Montresor group by a detachment fault (D2). A third set of structures including mylonites juxtaposes the basal footwall complex and surrounding granitoid rocks carrying concordant augen gneissic fabric. The Montresor syncline, outlined aeromagnetically by prominent magnetic siltstone beds, may be a D4 structure. Previously unrecognized breccia and hydrothermally altered alkaline igneous rocks occur as a stratabound layer in the southwestern Montresor syncline and have elevated Cu, Ag, Au values"--Abstract.

Permanent link to this Catalogue record:
publications.gc.ca/pub?id=9.801588&sl=0

Publication information
Department/Agency
  • Canada. Natural Resources Canada.
  • Geological Survey of Canada.
TitleGeology, Montresor River area, Nunavut, parts of NTS 66-H and NTS 66-I / [authors, J.A. Percival ... [et al.]].
Series title
  • Canadian geoscience map ; 231
Publication typeMonograph - View Master Record
Language[English]
FormatDigital map
Electronic document
Note(s)
  • Relief shown by contours.
  • This record only includes the map and the “Map information document” in PDF, the complete data set with all the files in various formats is available for free download at http://geoscan.nrcan.gc.ca/
  • Includes bibliographical references.
  • Includes abstract in French.
Publishing information
  • [Ottawa] : Natural Resources Canada, c2015.
Author / Contributor
  • Percival, J. A. (John Allan), 1952-
Description1 map : col. + 1 map information document ([12] p.).
ISBN978-0-660-02703-6
Catalogue number
  • M183-1/231-2015E-PDF
Departmental catalogue number296915
Edition
  • Preliminary version
Cartographic dataScale 1:100 000 ; Universal Transverse Mercator, zone 14 (W 98°00’--W 96°10'/N 66°30'--N 65°50’)
Subject terms
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