| Title | Quaternary geology of western Melville Island, Northwest Territories |
| Download | Downloads |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Hodgson, D A |
| Source | Geological Survey of Canada, Paper no. 89-21, 1992, 40 pages, https://doi.org/10.4095/183913  Open Access |
| Year | 1992 |
| Document | serial |
| Lang. | English |
| Maps | Publication contains 1 map |
| Map Info. | surficial geology, lithology, landforms, 1:250,000 |
| Media | paper; on-line; digital |
| Related | This publication contains Surficial Geology, Western
Melville Island, District of Franklin, Northwest Territories |
| File format | pdf |
| Province | Northwest Territories |
| NTS | 88H; 88G/01; 88G/02; 88G/07; 88G/08; 88G/09; 88G/10; 88G/15; 88G/16; 89B/01; 89B/02; 89B/07; 89B/08; 89B/09; 89B/10; 89A/01; 89A/02; 89A/03; 89A/04; 89A/05; 89A/06; 89A/07; 89A/08; 89A/09; 89A/10; 89A/11;
89A/12 |
| Area | Melville Island; Canrobert Hills; Blue Hills; Raglan Range |
| Lat/Long WENS | -118.0000 -112.0000 76.5833 75.0000 |
| Subjects | surficial geology/geomorphology; Pleistocene; Holocene; tills; provenance; glaciofluvial deposits; glaciolacustrine deposits; glaciomarine deposits; eskers; kames; marine deposits; raised beaches;
fluvial deposits; colluvial deposits; ground ice; glaciers; glacial striations; glacial history; glaciation; sea level changes; glacial deposits; radiocarbon dates; radiometric dates; landforms; ice sheets; Laurentide Ice-sheet; Quaternary |
| Illustrations | sketch maps; cross-sections; aerial photographs; photographs |
| Released | 1993 03 01; 2013 10 24 |
| Abstract | The western peninsula of Melville Island includes the highest elevations in the western Arctic Archipelago. At the centre are the Blue Hills plateaus, lying 400-750 m a.s.l., which are dissected on the
margins and eut radially by cliffed sea inlets. The longes! of several transecting scarps forms the border with northern lowlands. Sorne important morphological elements date/rom the Paleozoic; planation swfaces are likely Tertiary peneplains, but
the origin of other such elements as the inlets, linear coastlines, and adjacentflatfloored channels, is equivocal. Most of the peninsula is mantled by up to several metres of frost disaggregated bedrock. This weathered rock, derivedfrom a variety of
clastic and calcareous sediments, includes discrete areas of fines, sand, mixed fines and rubble, and rubble. These materials bear no clear ùulicators of glaciation, other than marginal meltwater channels on coarse mate rials tracing retreat of local
ice from some coasts to the interior. Scattered patches of till, ice contact deposits, and undated raised glaciomarine deposits were left by a partial caver of local glacial ice, which was at least 300 m thick in places. Circumstantial evidence
suggests a Late Wisconsinan age for this event; however, the highest evidence of marine overlap does not conform to the uplift pattern expected from an island ice cap. Rare erratics of southern provenance at al! elevations indicate inwulation by
continental ice, probably in early Quaternary time. The M' Cl ure glacier, at the northwest li mit of the Late Wisconsinan Laurentide ce Sheet, pushed onto the south coast earlier than 11.7 ka. Modern and inactive fluvial sediments are the most
widespread Quaternary deposits. Emergent shoreline deposits are rare. Static plateau glaciers are not relictsfrom the Pleistocene, but datefrom post-Hypsithermal cooling, when even more extensive areas were intermittent/y blanketed by perennial snow
caver. |
| GEOSCAN ID | 183913 |
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