00000nem 2200000za 4500 9.801588 CaOODSP 20230131161135 m go c f cr ||||||||||| 170207s2015 onca bd a fo 0 eng d 978-0-660-02703-6 CaOODSP eng eng fre n-cn-nu M183-1/231-2015E-PDF Geology, Montresor River area, Nunavut, parts of NTS 66-H and NTS 66-I [electronic resource] / [authors, J.A. Percival ... [et al.]]. Preliminary version Scale 1:100 000 ; Universal Transverse Mercator, zone 14 (W 98°00’--W 96°10'/N 66°30'--N 65°50’) [Ottawa] : Natural Resources Canada, c2015. 1 map : col. + 1 map information document ([12] p.). Canadian geoscience map ; 231 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. “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. Includes abstract in French. gccst Geological maps gccst Structural geology gccst Structural geology Percival, J. A. (John Allan), 1952- Canada. Natural Resources Canada. Geological Survey of Canada. Canadian geoscience map ; 231. (CaOODSP)9.506260 PDF 9.79 MB https://publications.gc.ca/collections/collection_2017/rncan-nrcan/M183-1-231-2015-eng.pdf Map PDF 352 KB https://publications.gc.ca/collections/collection_2017/rncan-nrcan/M183-1-231-2015-1-eng.pdf Map information document HTML N/A https://doi.org/10.4095/296915 GEOSCAN DOI 296915