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TitleQuaternary geology of the northeastern part of the central Mackenzie Valley corridor, District of Mackenzie, Northwest Territories
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorDuk-Rodkin, A; Hughes, O L
SourceGeological Survey of Canada, Bulletin 458, 1995, 53 pages (11 sheets), Open Access logo Open Access
PublisherNatural Resources Canada
MapsPublication contains 6 maps
Map Info.surficial geology, lithological, landforms, 1:250,000
Map Info.surficial geology, glaciation, 1:1,000,000
Mediapaper; on-line; digital
RelatedThis publication contains the following publications
File formatpdf
ProvinceNorthwest Territories; Yukon
NTS106I; 106J; 106N; 106O; 106P
AreaMackenzie Delta; Richardson Mountains; Mackenzie Mountains; Arctic Red River; Mackenzie River
Lat/Long WENS-134.0000 -128.0000 68.0000 66.0000
Subjectssurficial geology/geomorphology; moraines; glaciofluvial deposits; glaciolacustrine deposits; alluvial deposits; organic deposits; glacial history; glaciation; deglaciation; glacial lakes; glacial deposits; paleohydrology; Wisconsinian Glacial Stage; glacial stages; ice sheets; permafrost; tills; vegetation; lithology; stratigraphic analyses; landslides; Glacial Lake Ontaratue; Glacial Lake Travaillant; Laurentide Ice-sheet; Quaternary
Illustrationssketch maps; stratigraphic charts; cross-sections; aerial photographs; stratigraphic columns; photographs; block diagrams; profiles
Released1996 04 01; 2016 08 16
AbstractDuring its maximum extent, the Late Wisconsinan Laurentide Ice Sheet buried the study area under approximately 600 m of ice. The Hyndman and Travaillant uplands were free of ice about 23 ka during Katherine Creek Phase. Series of glacial lakes were formed as the ice retreated southeastward. Glacial Lake Tenlen was the first glacial lake to form after deglaciation of uplands and was followed by glacial Lake Travaillant when ice retreated from the Tutsieta Lake Moraine about 13 ka (Tutsieta Lake Phase). The lake had a series of outlets that migrated from east to west. The last outlet of glacial Lake Travaillant was Mackenzie River. Further ice retreat resulted in the formation of glacial Lake Ontaratue which drained into a late stage of glacial Lake Travaillant and established a permanent channel for Mackenzie River (Ontaratue glacial Lake stage). Glacial Lake Mackenzie, with an outlet at Ramparts, was formed before final deglaciation of the region about 11.5 ka.
The surficial materials in the region are mainly deposits of the Late Wisconsinan Laurentide Ice Sheet. Most of the region is covered by morainic deposits of which a belt of hummocky moraines (Tutsieta Lake Moraine) is the most prominent feature. Moraine plains surfaces have flutings and drumlins indicating that the general direction of ice movement was southeast-northwest. Extensive glaciolacustrine sediments, deltaic deposits, and peat mark the location of former glacial lakes.
The study area is located mainly within the zone of discontinuous permafrost, with the northernmost part lying within the zone of continuous permafrost. Development in this region particularly in the southern areas is constrainted by permafrost conditions. Geomorphic processes take place naturally and continually in terrain affected by permafrost and may damage human-made structures, particularly where human activity exposes the permanently frozen soil to thawing.

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