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TitleGeology of eastern Prince of Wales Island and adjacent smaller islands, Nunavut
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AuthorMayr, U; Brent, T A; de Freitas, T; Frisch, T; Nowlan, G S; Okulitch, A V
SourceGeological Survey of Canada, Bulletin no. 574, 2004, 88 pages; 1 CD-ROM, https://doi.org/10.4095/215690
Year2004
PublisherNatural Resources Canada
Documentserial
Lang.English
MediaCD-ROM; digital; paper; on-line
RelatedThis publication contains the following publications
File formatreadme / lisez-moi
File formatpdf (Acrobat Reader v5.1 is included / est fourni)
ProvinceNunavut
NTS68A/01; 68A/02; 68A/03; 68A/06; 68A/07; 68A/08; 68A/09; 68A/11; 68A/14; 68A/15; 68A/16; 68C/01; 68C/02; 68C/03; 68C/06; 68C/07; 68C/10; 68C/11; 68C/14; 68C/15
AreaPrince of Wales Island; Baring Channel; Fisher Lake
Lat/Long WENS-99.0000 -96.0000 74.0000 72.0000
Subjectsstratigraphy; structural geology; geochronology; tectonics; geophysics; paleontology; bedrock geology; sedimentary rocks; sandstones; carbonates; metamorphic rocks; orthogneisses; metamorphism; igneous rocks; biostratigraphy; radiometric dating; uranium lead dating; structural features; faults, thrust; folds; tectonic evolution; Archean; hydrocarbon potential; Arctic Platform; Boothia Uplift; Aston Formation; Hunting Formation; Lang River Formation; Allen Bay Formation; Cape Storm Formation; Douro Formation; Drake Bay Formation; Peel Sound Formation; conodonts; Thelon Tectonic Zone; Cape Clay Formation; Cass Fiord Formation; Paleozoic; Cambrian; Ordovician; Silurian; Devonian; Precambrian; Proterozoic
Illustrationssketch maps; photographs; stratigraphic sections; seismograms; cross-sections; tables
Image
Released2004 10 01
AbstractThe report area forms a narrow, north-oriented rectangle in the south-central part of the Arctic Islands. The area comprises the northeastern part of Prince ofWales Island and adjacent smaller islands. The western part of the area is underlain by very gently dipping lower Paleozoic formations of the Arctic Platform, and the eastern part by Proterozoic sedimentary rocks and intrusions and by Archean crystalline rocks of the Boothia Uplift. A major, west-directed thrust zone separates the two areas. The Precambrian rocks comprise three assemblages: an Archean and/or lower Proterozoic basement of granulite grade metamorphic rocks (predominantly orthogneiss), its Mesoproterozoic cover of sedimentary rocks, and two suites of mafic igneous rocks of Meso- and Neoproterozoic ages. The Cambrian to mid-Silurian succession consists of minor sandstone and varied carbonate units. Upper Silurian and Lower Devonian rocks contain a large amount of terrigenous material in the vicinity of the Boothia Uplift, but they consist of carbonate deposits in the platform region.
The north-trending gneissic fabric of the basement controlled the overall form of the Boothia Uplift. The basement is cut by northwest-, west-, and northeast-trending faults and fractures, which influenced its subdivision into numerous small blocks that acted semi-independently of one another. As a result, the western frontal fold and thrust belt of the Boothia Uplift, although continuous for 500 km and with consistent west-verging geometry, is remarkably heterogeneous in detail. Blocks with their own consistent geometry rarely exceed 10 km in strike length; a few are as small as 2 km long.
GEOSCAN ID215690