| Title | The Duke of York and related Neoproterozoic inliers of southern Victoria Island, Distict of Franklin, Northwest Territories |
| Download | Download (whole publication) |
| Author | Rainbird, R H; LeCheminant, A N; Lawyer, J I |
| Source | Current Research/Recherches en cours; by Geological Survey of Canada; Geological Survey of Canada, Current Research no. 1996-E, 1996 p. 125-134, https://doi.org/10.4095/207881 |
| Year | 1996 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English |
| Media | paper |
| Related | This publication is contained in Geological Survey of
Canada; Geological Survey of Canada; (1996). Current Research, Geological Survey of Canada, Current Research no. 1996-E |
| Province | Nunavut |
| NTS | 77B; 77C |
| Area | Victoria Island; Johansen Bay; Richardson Islands; Nakyoktok River; Surrey Lake |
| Lat/Long WENS | -112.0000 -108.0000 70.0000 68.0000 |
| Subjects | structural geology; igneous and metamorphic petrology; lithology; dolostones; arenites; evaporites; sedimentary rocks; plutonic rocks; gabbros; sills; igneous rocks; faults; structural features; dykes;
structural trends; stromatolites; paleocurrent analyses; Duke of York Inlier; Shaler Supergroup; Mikkelsen Islands Formation; Aok Formation; Nelson Head Formation; Old Fort Island Formation; Cass Fiord Formation; Surrey Lake inlier; Proterozoic;
Ordovician; Cambrian |
| Illustrations | sketch maps; rose diagrams |
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| Program | Industrial Partners Program |
| Released | 1996 08 01 |
| Abstract | Duke of York inlier contains a ~400 m-thick succession of sulphate evaporite, cherty dolostone, and siltstone-quartz arenite of the Neoproterozoic Shaler Supergroup. When linked with similar rocks to
the north and south, these strata define a broad, gently northwest-dipping and northwest-concave arc. The arc parallels the inferred erosional edge of an intracratonic basin formed on the northwestern margin of Laurentia. The sedimentary rocks are
intercalated with at least six gabbro sills, up to 125 m thick, intruded during a large magmatic outburst at 0.72 Ga (Franklin events) linked to break-up of a Neoproterozoic supercontinent. The intrusive suite also includes northwest-striking dykes
and variably dipping, irregular gabbro sheets. A northeast-striking fault separates Victoria Island outcrops from down-dropped strata on the Richardson Islands. Proterozoic rocks are overlain by lower Paleozoic marine sandstones and carbonates, which
can be correlated with the Old Fort Island and Cass Fiord formations, respectively. |
| GEOSCAN ID | 207881 |
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