Geology, Nalluryuaq, Victoria Island, Northwest Territories / [Authors: J.H. Bédard ... [et al.]].: M183-1/103-2012E-PDF

"NTS 87-G/9 (Nalluryaq) and the southernmost part of NTS 87-G/16 are mostly underlain by Neoproterozoic Shaler Supergroup sedimentary rocks, with limestone and dolostone of the Boot Inlet and Jago Bay formations, quartz arenite of the Fort Collinson Formation, and gypsum evaporite of the Minto Inlet Formation. The latter locally form quarryable alabaster deposits as a result of contact metamorphism. Sedimentary rocks are injected by basaltic sills and dykes of Franklin age (ca. 720 Ma) that can be divided into older, more olivine-rich Type 1 intrusions and younger diabasic to feldspar-porphyritic Type 2 intrusions. Fe-oxide exoskarns are developed in the hangingwall panels of some synmagmatic normal faults. Strata are either flat-lying, or dip gently to the north or south to either side of the Walker Bay Anticline. Steeper bedding orientations occur near faults as a result of structural entrainment. A regional-scale basal unconformity separates Paleozoic clastic and carbonate rocks in the north from underlying Proterozoic rocks to the south, but the contact is often faulted, and isolated domains of Paleozoic rocks are preserved within graben. North-northwest-trending syn-magmatic (Proterozoic) and east-northeast-trending (Phanerozoic) normal faults are ubiquitous, breaking up the outcrop pattern into a series of polygonal blocks"--Abstract.

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Publication information
Department/Agency Canada. Natural Resources Canada.
Geological Survey of Canada.
Title Geology, Nalluryuaq, Victoria Island, Northwest Territories / [Authors: J.H. Bédard ... [et al.]].
Series title Canadian geoscience map ; 103
Publication type Series - View Master Record
Language [English]
Format Electronic
Electronic document
Note(s) 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, 2015.
Author / Contributor Bédard, Jean H., 1955-
Description 1 map : col. + 1 map information document ([11] p.).
ISBN 978-1-100-21439-9
Catalogue number
  • M183-1/103-2012E-PDF
Departmental catalogue number 297284
Edition Preliminary version
Cartographic data Scale 1:50,000 ; Universal Transverse Mercator, zone 11 (W 117°00’--W 116°00'/N 71°48'--N 71°30’)
Subject terms Geological maps
Geomorphology
Surficial geology
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