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TitleSurficial geology, Mahood Lake, British Columbia
AuthorHuscroft, C A
SourceGeological Survey of Canada, Open File 6172, 2009, 1 sheet; 1 CD-ROM, (Open Access)
LinksMetadata - Métadonnées
PublisherNatural Resources Canada
Documentopen file
Maps1 map
Map Info.surficial geology, landforms, lithology, 1:50,000
Mediapaper; digital; CD-ROM; on-line
File formatreadme / lisez-moi
File formatpdf; e00; shp; tiff; doc; txt; JPEG2000
ProvinceBritish Columbia
AreaMahood Lake; Murtle River; Corsica Lake; Italia Lake; Sicily Lake; Patricia Lake; Mann Creek; Moira Lake; Efdee Lake; Sock Lake; First Canyon Creek; Second Canyon Creek; Third Canyon Creek; Ordschig Creek; Duncan Creek; Shook Brook; Battle Creek; Philip Creek; Clover Creek; Hemp Creek; Pyramid Mountain; Lizard Head Mountain; Helmcken Canyon; Green Mountain; Mount Mahood; Swayback Ridge; Blackwater Creek; Flourmill Creek; Jonah Lake; Quesnel Highland; Spanish Creek; Pendleton Lakes; Clearwater River
Lat/Long WENS-120.5000 -120.0000 52.0000 51.7500
Subjectssurficial geology/geomorphology; stratigraphy; glacial deposits; glaciolacustrine deposits; glaciofluvial deposits; tills; colluvial deposits; organic deposits; glacial striations; landforms; glacial landforms; Quaternary; Cenozoic
ProgramMountain Pine Beetle, Geoscience for Mountain Pine Beetle Response
Released2009 12 21
AbstractThe Mahood Lake map area (92P/16) straddles the contact between the Shuswap and Quesnel highlands of south central British Columbia. It is a mountainous region with an average elevation above 1300 m above sea level. Part of the map area is located within the Wells Gray Provincial Park. Most of the region drains to the east and south via Clearwater River which is a tributary of Thompson River to the south. The region is predominantly underlain by till which consists of a poorly sorted diamicton with clasts of all size. Bedrock exposures are large and continuous on top of mountains and on certain hill sides. Till is overlain in places by glaciofluvial sediments which were deposited in meltwater streams at the end of the last glaciation. Glaciolacustrine sediments, deposited in glacial lakes which formed at the end of the last glaciation, were only mapped within a meltwater channel north of Murtle River. Lacustrine sediments are present at the periphery of modern lakes. These were deposited at a time when the lakes occupied a higher level. Modern stream sediments (alluvium) are present in extent large enough to be mapped in some of the valleys. Colluvial deposits are mapped on steep slopes and are predominantly present in the Mahood Lake and Clearwater River valleys. During the last glaciation, probably at glacial maximum, ice was dominantly moving to the south southeast as recorded by flutings, crag-and-tails and drumlins. However, an earlier phase of ice flow to the west to southwest was recorded from the glacial striation record observed in adjacent map areas. The drumlins oriented south-westerly in the Pendleton Lake valley attest to this first phase of ice-flow. A number of landslides have been mapped in the region indicating the potential for this natural hazard on some of the steep slopes.