| Title | The geology of Devon Island north of 76°, Canadian Arctic Archipelago |
| Download | Downloads |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Mayr, U (ed.); de Freitas, T (ed.); Beauchamp, B (ed.); Eisbacher, G (ed.) |
| Source | Geological Survey of Canada, Bulletin 526, 1998, 500 pages (1 sheet), https://doi.org/10.4095/209767  Open Access |
| Year | 1998 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English |
| Maps | Publication contains 1 map |
| Map Info. | geological, structural, lithological, 1:250,000 |
| Media | paper; on-line; digital |
| Related | This publication contains the following
publications |
| File format | pdf |
| Province | Nunavut |
| NTS | 59A/03; 59A/04; 59A/05; 59A/06; 59A/11; 59A/12; 59B; 69A/09; 69A/16; 69D/01SE; 59C/04SW |
| Area | Devon Island; Prince Alfred Bay |
| Lat/Long WENS | -97.5000 -89.0000 77.0833 76.0000 |
| Subjects | structural 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 |
| Illustrations | sketch maps; photographs; cross-sections; photomicrographs; stratigraphic sections; analyses; stratigraphic columns |
| Released | 1998 07 01; 2013 09 17 |
| Abstract | Devon 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. |
| GEOSCAN ID | 209767 |
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