GEOSCAN, résultats de la recherche


TitreA GIS dataset of geological features for the Red Fern Lake area (94 G/5), British Columbia
AuteurLane, L S
SourceCommission géologique du Canada, Dossier public 4603, 2004; 1 CD-ROM,
Documentdossier public
Cartes1 carte
Info. cartegéologique, 1/50,000
MediaCD-ROM; numérique; en ligne
Référence reliéeCette publication est remplacée par Lane, L S; (2004). A GIS dataset of geological features for the Red Fern Lake area (94 G/5), British Columbia, Commission géologique du Canada, Dossier public 4603, éd. rev.
Formatse00; shp; dxf; pdf (includes Acrobat Reader v5.0.5)
Lat/Long OENS-124.0000 -123.0000 57.5000 57.2500
Sujetsgéologie du substratum rocheux; roches sédimentaires; calcaires; schistes; dolomies; silstones; arénites; quartzites; chailles; failles; foliation; anticlinaux; synclinaux; Groupe de Bullhead ; Groupe de Minnes ; Formation de Fernie ; Groupe de Schooler Creek ; Formation de Pardonet ; Formation de Baldonnel ; Formation de Charlie Lake ; Formation de Liard ; Groupe de Diaber ; Formation de Toad ; Formation de Grayling ; Formation de Fantasque ; Groupe de Stoddart ; Groupe de Rundle ; Formation de Prophet ; Formation de Besa River ; Formation de Dunedin ; Formation de Stone ; Formation de Wokkpash ; Formation de Muncho-Mcconnell ; Formation de Nonda ; Formation de Beaverfoot ; Formation de Skoki ; Groupe de Kechika ; géologie générale; géologie structurale; Ordovicien; Cénozoïque; Silurien; Dévonien; Carbonifère; Permien; Trias; Jurassique; Crétacé
ProgrammeProjet de l'avant-pays central du CARTNAT
Diffusé2004 06 01; 2019 02 07
Résumé(disponible en anglais seulement)
The geological map and database are derived from regional mapping in the Redfern Lake (NTS 94G/5) 1:50 000 scale map area, as part of the Geological Survey of Canada's Central Foreland NATMAP project. Geological features represented by attributed points, lines, and polygons have been compiled into a GIS dataset suitable for stand-alone use, or integration with other data sets. User-defined attributes provide traditional geological map information with greater detail and enhancements. Redfern Lake map area encompasses the transition from the Foothills to the Main Ranges of the northern Rocky Mountains of northeastern British Columbia. The Foothills are underlain by late Paleozoic and Mesozoic rocks that are deformed into long linear folds with minor thrust faults, all detached on a basal decollement in the underlying Besa River Formation. The Main Ranges in the western part of the map area are underlain by lower Paleozoic limestones, dolostones and quartzites emplaced by large, shallow-dipping thrust faults onto the Besa River Formation. The dolostones are internally deformed by smaller thrust fault. The limestones contain tight overturned folds with penetrative cleavage. Whereas the early Paleozoic rocks are dominated by thick panels of carbonate rocks, the late Paleozoic and younger units are dominated by clastic rocks with subsidiary but economically significant carbonates in the Carboniferous Prophet (Debolt) Formation and the Triassic Charlie Lake, Baldonnel and Pardonet formations. Broad glacially scoured river valleys cut through the ranges. Some of these valleys are occupied by transverse faults which accommodate differential shortening and/or structural transitions at depth.