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.
Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.801588&sl=1
Ministère/Organisme | Canada. Natural Resources Canada. Geological Survey of Canada. |
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Titre | Geology, Montresor River area, Nunavut, parts of NTS 66-H and NTS 66-I / [authors, J.A. Percival ... [et al.]]. |
Titre de la série | Canadian geoscience map ; 231 |
Type de publication | Série - Voir l'enregistrement principal |
Langue | [Anglais] |
Format | Électronique |
Document électronique |
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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. |
Information sur la publication | [Ottawa] : Natural Resources Canada, c2015. |
Auteur / Contributeur | Percival, J. A. (John Allan), 1952- |
Description | 1 map : col. + 1 map information document ([12] p.). |
ISBN | 978-0-660-02703-6 |
Numéro de catalogue |
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Numéro de catalogue du ministère | 296915 |
Édition | Preliminary version |
Données cartographiques | Scale 1:100 000 ; Universal Transverse Mercator, zone 14 (W 98°00’--W 96°10'/N 66°30'--N 65°50’) |
Descripteurs | Geological maps Structural geology Structural geology |
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