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TitleQuaternary geology of western Melville Island, Northwest Territories
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AuthorHodgson, D A
SourceGeological Survey of Canada, Paper no. 89-21, 1992, 40 pages, https://doi.org/10.4095/183913 (Open Access)
Year1992
Documentserial
Lang.English
MapsPublication contains 1 map
Map Info.surficial geology, lithology, landforms, 1:250,000
Mediapaper; on-line; digital
RelatedThis publication contains Hodgson, D A; (1992). Surficial Geology, Western Melville Island, District of Franklin, Northwest Territories, Geological Survey of Canada, "A" Series Map no. 1753A
File formatpdf
ProvinceNorthwest Territories
NTS88H; 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
AreaMelville Island; Canrobert Hills; Blue Hills; Raglan Range
Lat/Long WENS-118.0000 -112.0000 76.5833 75.0000
Subjectssurficial 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
Illustrationssketch maps; cross-sections; aerial photographs; photographs
Released1993 03 01; 2013 10 24
AbstractThe 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 ID183913