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TitreSurficial geology of the Highland Valley Cu phopyryr district, southcentral British Columbia
AuteurPlouffe, A; Ferbey, T; Bustard, A L
SourceMineral Exploration Roundup 2016 Poster Session; par Association for Mineral Exploration British Columbia; 2016 p. 28
LiensOnline - En ligne (PDF, 319 KB)
Séries alt.Secteur des sciences de la Terre, Contribution externe 20150438
RéunionAMEBC Mineral Exploration Roundup 2016; Vancouver BC; CA; janvier 25th-28th, 2016
Mediaen ligne; numérique
SNRC92I/05; 92I/06; 92I/09; 92I/10
Lat/Long OENS-121.5000 -120.5000 50.7500 50.2500
Sujetsgisements porphyriques; dépôts glaciaires; tills; minéralisation; glaciation; Wisconsinien; faciès; Glaciation de Fraser ; géologie des dépôts meubles/géomorphologie
Illustrationssketch map
ProgrammeÉtude des gîtes porphyriques, Initiative géoscientifique ciblée (IGC-4)
Résumé(disponible en anglais seulement)
This poster presents the surficial geology elements of the Highland Valley Cu porphyry district. All of these elements have implications for mineral exploration. 1) A succession of glacial and non-glacial sediments underlie the till of the last glaciation over part of the Valley and all of the J.A. deposits. Consequently, all mineralized zones covered by sediments that pre-date the last glaciation were not exposed to glacial erosion and therefore, are not reflected in the till composition. 2) The region was last glaciated during the Late Wisconsinan Fraser Glaciation. During this glacial event, ice was flowing to the south to southeast as revealed by the orientation of streamlined landforms such as flutings, drumlins and crag-and-tails and bedrock striations. There is no depositional or erosional evidence of an early eastward ice-flow out of the Coast Mountains despite the close proximity of the study area to this major ice accumulation centre. Consequently, tracing till geochemical or mineralogical anomalies needs to rely on a single vector of glacial transport. 3) The region is characterized by two till facies. A poorly compacted, massive, sandy and boulder diamicton which is interpreted as ablation till. It overlies a well compacted, massive, silty diamicton interpreted as subglacial till. The composition of both till facies is currently being evaluated because they likely reflect different provenance regions. 4) The poster includes a surficial geology map of the Highland Valley district which depicts the distribution of various glacial and non-glacial sediments and landforms.