GEOSCAN Search Results: Fastlink


TitleSurficial geology, Pesh Creek, British Columbia
AuthorBednarski, J M
SourceGeological Survey of Canada, Open File 5481, 2008, 1 sheet; 1 CD-ROM, (Open Access)
LinksMetadata - Métadonnées
PublisherNatural Resources Canada
Documentopen file
Maps1 map
Map Info.surficial geology, surficial materials and landforms, 1:50,000
Mediapaper; CD-ROM; digital; on-line
File formatreadme / lisez-moi
File formate00 (ESRI® ArcExplorer(TM) v. 2.0 is included / est fourni); shp; tif; pdf; JPEG2000
ProvinceBritish Columbia
AreaPesh Creek; Shekilie River
Lat/Long WENS-120.5000 -120.0000 59.5000 59.2500
Subjectssurficial geology/geomorphology; glaciation; deglaciation; postglacial deposits; glacial deposits; proglacial deposits; glaciolacustrine deposits; proglacial lake deposits; glaciofluvial deposits; ice margins; ice contact deposits; outwash; outwash plains; outwash deltas; outwash fans; meltwater channels; kettles; colluvial deposits; mass wasting; landslide deposits; slumps; solifluction; alluvial deposits; flood plains; lacustrine deposits; fluvial deposits; terraces; deltaic sediments; alluvial fans; alluvium; organic deposits; peat bogs; swamps; fens; hummocks; permafrost; ground ice; thermokarst; sands; gravels; silts; clays; glacial features; glacial landforms; tills; drumlins; erratics; carbonate rocks; glacial flutings; moraines; till ridges; eskers; crevasses; ice movement directions; sedimentary rocks; sandstones; shales; glacial stages; Wisconsinian glacial stage; paleotopography; shoreline changes; Dunvegan Formation; Fort St. John Group; Shaftesbury Formation; Laurentide Ice Sheet; Phanerozoic; Cenozoic; Quaternary; Mesozoic; Cretaceous
ProgramTargeted Geoscience Initiative (TGI-2), 2003-2005
Released2008 04 01
AbstractThe surficial geology of the Pesh Creek (NTS 94 P/8) map area is dominated by the effects of continental glaciation during the Late Wisconsinan (ca. 25 000-10 000 years ago). In general the ice sheet advanced from the northeast and occupied the broad Shekilie River valley, but at some point, the ice flowed westward across the valley and onto the Etsho Plateau, which borders the western part of the map area. The Shekilie River valley lies about 250 m below the plateau. During deglaciation, when the ice sheet thinned and separated into topographically-controlled lobes, an ice margin within the Shekilie River valley migrated southward and dammed a proglacial lake in the process. This lake migrated southward with the ice margin and eventually merged into glacial Lake Hay. Shekilie River valley is underlain by Cretaceous shale, clayey till and fine glaciolacustrine sediments, which are all poorly drained, and thick organic sediments accumulated over most of the area. Currently, extensive muskeg forms hummocky peatlands which are probably underlain by permafrost and significant amounts of ground ice.