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TitleDrift-prospecting investigations in the Yellowknife Greenstone Belt, Northwest Territories
AuthorKerr, D E; Knight, R D; Smith, D; Nickerson, D
SourceGeological Survey of Canada, Current Research (Online) no. 2001-C1, 2001, 16 pages, (Open Access)
LinksCanadian Database of Geochemical Surveys, downloadable files
LinksBanque de données de levés géochimiques du Canada, fichiers téléchargeables
PublisherNatural Resources Canada
Mediapaper; on-line; digital; CD-ROM
RelatedThis publication is contained in Geological Survey of Canada; (2001). Current Research 2001, winter release, Geological Survey of Canada, Current Research no. 2001
File formatpdf
ProvinceNorthwest Territories
NTS85J/08; 85J/09; 85J/16; 85O/01; 85P/04; 85I/04
AreaYellowknife; Drybones Bay; Nicholas Lake; Octopus Lake; 2
Lat/Long WENS-114.5000 -113.5000 63.2500 62.0000
Subjects4; surficial geology/geomorphology; geochemistry; economic geology; gold; drift prospecting; drift geochemistry; till geochemistry; ice flow; flow trajectories; pebble lithology; heavy mineral analyses; dispersal patterns; metasedimentary rocks; volcanic rocks; Yellowknife Greenstone Belt; Discovery Mine; Con Mine; Quaternary
Illustrationssketch maps; photographs
ProgramCanada-Northwest Territories Exploration Science and Technology [EXTECH III] Initiative, 1999-2003, Yellowknife Mining Camp
Released2001 01 01
AbstractSurficial geology studies and geochemical analyses of till and organic materials provide new baseline data for min- eral exploration in the Yellowknife Greenstone Belt. The mapped pattern of ice-flow indicators throughout the study area is generally consistent with the dominant regional flow and confirms a generally southwestward ice move- ment. Minor variations indicate local late-glacial flow ranging from west-northwestward to west-southwestward. Pebble-lithology studies indicate that dispersal patterns in till reflect the last southwestward flow. Metasedimentary and volcanic (nongranitic) clasts predominate in most areas underlain by both metasedimentary-volcanic and gra- nitic bedrock, and suggest transport distances of at least 25 km for some clasts. Gold-grain counts of the heavy-mineral fraction of till indicate that background values over granitic terrain for each sample is approximately 0 to 1 grain/10 kg of till. Anomalous concentrations of 19 gold grains/sample in granitic terrain southeast of Drybones Bay are currently being investigated.