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TitleLandslides of the Mackenzie valley and adjacent mountainous and coastal regions
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AuthorAylsworth, J M; Duk-Rodkin, A; Robertson, T; Traynor, J A
SourceThe physical environment of the Mackenzie Valley, Northwest Territories: a base line for the assessment of environmental change; by Dyke, L D (ed.); Brooks, G R (ed.); Geological Survey of Canada, Bulletin 547, 2000 p. 167-176; 1 CD-ROM, (Open Access)
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PublisherNatural Resources Canada
MapsPublication contains 1 map
Map Info.geological, landslide distribution, 1:2,000,000
Mediapaper; CD-ROM; digital; on-line
RelatedThis publication is contained in Dyke, L D; Brooks, G R; (2000). The physical environment of the Mackenzie Valley, Northwest Territories: a base line for the assessment of environmental change, Geological Survey of Canada, Bulletin no. 547
RelatedThis publication is related to Duk-Rodkin, A; Hood, J L; (2004). Landslide inventory for the Fort Norman map area (96C), Northwest Territories, Geological Survey of Canada, Open File 4663, Geological Survey of Canada, Bulletin
File formatbmp; pdf (Adobe Acrobat Reader v.6.0 is included / est fourni); txt; pdf
ProvinceNorthwest Territories
NTS85D; 85E; 95A; 95B; 95G; 95H; 95I; 95J; 95K; 95N; 95O; 96C; 96D; 96E; 96F; 106G; 106H; 106I; 106J; 106K; 106L; 106M; 106N; 106O; 106P; 107B; 107C
AreaMackenzie Valley
Lat/Long WENS-136.0000 -118.0000 70.0000 60.0000
Subjectssedimentology; surficial geology/geomorphology; Nature and Environment; climatic fluctuations; glacial deposits; sedimentation; landslides; slope failures; permafrost; ground ice; groundwater movement; slope stability; tills; debris flows; freeze-thaw cycles; Quaternary
Illustrationssketch maps
Released2000 12 01
AbstractApproximately 3400 landslides, distinguished by failure class (flow, slide, complex, unclassified) and parent material (bedrock or unconsolidated Quaternary sediment) have been mapped in the Mackenzie valley. Many landslides are related to the degradation of permafrost and ground ice; others are influenced by the control permafrost maintains on ground water movement. Given the prevalence of permafrost and icy sediments in this region, any climate change leading to a rise in ground temperatures and degradation of permafrost will increase the frequency of landslides. The most vulnerable sites include ice-rich, fine-grained sediments on slopes near water bodies or in fire scars, and frozen, coarse-grained sediments overlying clay or clayey till in steep riverbanks where permafrost does not extend to the base of the section.