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TitleThe geology of Devon Island north of 76°, Canadian Arctic Archipelago
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorMayr, U (ed.); de Freitas, T (ed.); Beauchamp, B (ed.); Eisbacher, G (ed.)
SourceGeological Survey of Canada, Bulletin 526, 1998, 500 pages (1 sheet), Open Access logo Open Access
PublisherNatural Resources Canada
MapsPublication contains 1 map
Map Info.geological, structural, lithological, 1:250,000
Mediapaper; on-line; digital
RelatedThis publication contains the following publications
File formatpdf
NTS59A/03; 59A/04; 59A/05; 59A/06; 59A/11; 59A/12; 59B; 69A/09; 69A/16; 69D/01SE; 59C/04SW
AreaDevon Island; Prince Alfred Bay
Lat/Long WENS-97.5000 -89.0000 77.0833 76.0000
Subjectsstructural geology; stratigraphy; sedimentology; stratigraphic analyses; stratigraphic correlations; carbonate rocks; sedimentary rocks; lithology; Upper Ordovician; Lower Devonian; transgressions; regressions; depositional environment; Emsian; Famennian; Eifelian; Frasnian; hydrocarbon potential; hydrocarbons; petrographic analyses; structural features; folds; faults, thrust; faults; igneous rocks; plutonic rocks; mineralization; Allen Bay Formation; Baumann Fiord Formation; Bay Fiord Formation; Bird Fiord Formation; Cape Clay Formation; Cape Storm Formation; Cass Fjord Formation; Christian Elv Formation; Cornwallis Group; Devon Island Formation; Douro Formation; Eleanor River Formation; Fram Formation; Goose Fiord Formation; Grinnell Thrust; Hecla Bay Formation; Hell Gate Formation; Irene Bay Formation; Nordstrand Point Formation; Oske Bay Group; Parry Islands Formation; Prince Alfred Formation; Strathcona Fiord Formation; Sutherland River Formation; Thumb Mountain Formation; Vendom Fiord Formation; Canyon Fiord Formation; Cape Phillips Formation; Blanley Bay Formation; Bjourne Formation; Trold Fiord Formation; Great Bear Cape Formation; Assistance Formation; Raanes Formation; Belcher Channel Formation; Emma Fiord Formation; Beaufort Formation; Expedition Fiord Formation; Kanguk Formation; Cambrian; Ordovician; Devonian; Carboniferous; Triassic; Cretaceous; Permian; Silurian
Illustrationssketch maps; photographs; cross-sections; photomicrographs; stratigraphic sections; analyses; stratigraphic columns
Released1998 07 01; 2013 09 17
AbstractDevon Island north of 76° comprises Grinnell Peninsula and a land area to the east, which is connected to the main part of Devon Island farther south. The study area is the geographic centre of the Canadian Arctic Islands and is also a geological centre in the sense that a number of different stratigraphic and tectonic trends converge and interact there. It straddles the Paleozoic platform-basin boundary and the southern margin of the younger Sverdrup Basin. The northerly fold trends of the Boothia Uplift-Cornwallis Fold Belt and the westerly trends of the Central Ellesmere Bold Belt intersect on Grinnell Peninsula.
The total exposed succession on northern Devon Island is more than 9000 m thick and contains two major unconformities that correspond to the Cornwallis Disturbance and the Ellesmerian Orogeny. The Cambrian to Lower Devonian formations, affected by the Cornwallis Disturbance, consist of shelf carbonates and evaporites that grade westward and northwestward to pe(itic basinal sediments. The facies transition is marked by the development of large reefs at various stratigraphic levels
The Middle and Upper Devonian succession was deposited during the interval between the Cornwallis Disturbance and the Ellesmeriun Orogeny. It consists of a lower carbonate unit that onlaps the Cornwallis Fold Belt, and grades up into nonmarine sandstones, which are the fill of the southeastward-advancing Ellesmerian foreland basin.
The formations of the post-Ellesmerian Sverdrup Basin constitute a thin, mixed carbonate- clastic, basin-margin succession that ranges in age from EarIy Carboniferous to Early Triassic.
Upper Cretaceous to Miocene, poorly consolidated shale and sandstone lie unconformably on lower Paleozoic rocks and are preserved in several small grabens. The Eurekan Orogeny produced a northwest-trending thrust belt and large, southeast-trending strike-slip zones that may still be active.
Grinnell Peninsula lies north of and on structural strike with the Little Cornwallis lead- zinc district, but there are no known economic mineral occurrences on the peninsula.

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