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TitleLate Wisconsinan glacial history in the Bonaparte Lake map area, south central British Columbia: implications for glacial transport and mineral exploration
AuthorPlouffe, A; Bednarski, J M; Huscroft, C A; Anderson, R G; McCuaig, S J
SourceGeohydro 2011, Joint meeting of the CANQUA and International Association of Hydrogeologists, abstracts volume; 2011, 1 pages
LinksOnline - En ligne (Full program/Programme complet, PDF 150 MB)
Alt SeriesEarth Sciences Sector, Contribution Series 20100376
MeetingGeohydro 2011, Joint meeting of the CANQUA and International Association of Hydrogeologists; Quebec City; CA; August 28-31, 2011
ProvinceBritish Columbia
AreaBonaparte Lake
Lat/Long WENS-122.0000 -120.0000 52.0000 51.0000
Subjectssurficial geology/geomorphology; economic geology; ice flow; ice retreat; ice movement directions; drift prospecting; drift deposits; glacial features; glacial deposits; glaciofluvial deposits; tills; lithology; glaciation; mineralization; mineral occurrences; mineral potential; gold; bedrock geology; base metals; silts; clays; Quaternary; Cenozoic
ProgramMountain Pine Beetle, Geoscience for Mountain Pine Beetle Response
AbstractOur study is centred on the Bonaparte Lake map area (NTS 092P) located in the southern Interior Plateau of south central British Columbia. The reconstruction of the Late Wisconsinan glacial history for this part of the southern sector of the Cordilleran Ice Sheet incorporates 1) the analysis and interpretation of landforms of various scales, 2) the sedimentology and stratigraphy of glacial sediments, and 3) the geochemical and mineralogical composition of till and subsequent analysis of regional glacial dispersal of these components. The onset of the last glacial event was initiated by ice advancing westward and southwestward into the study area from an alpine source region located in the Cariboo Mountains. As glaciation intensified, ice from the Coast Mountains coalesced with the Cariboo Mountain ice over the Interior Plateau and developed into an ice divide north of the study area, around 52 degrees north latitude. As a result, ice flow was diverted southward over the study area during glacial maximum. The net results of these changing ice-flow directions produced palimpsest dispersal patterns as delineated by three tracers in till; thorianite grains and terbium concentrations in the heavy mineral fraction, and granitoid pebble percentage. The reconstructed ice-flow history of this study area has significant implications for mineral exploration which uses mineral tracing in glacial sediments, especially in the area underlain by the highly prospective Quesnel Terrane.