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TitreGeochemistry of alkaline lake waters of the northern Kechika Trough, British Columbia (NTS 94M/2, 3, 4, 5, 6, 12; 104P/8, 9, 10, 15, 16)
AuteurCook, S J; Jackaman, W; Friske, P W; Day, S J; Hall, G E M; Coneys, A M
SourceCommission géologique du Canada, Dossier public 3704, 1999, 156 pages; 1 diskette, (Accès ouvert)
LiensOnline - En ligne
LiensCanadian Database of Geochemical Surveys, downloadable files
LiensBanque de données de levés géochimiques du Canada, fichiers téléchargeables
Séries alt.British Columbia Ministry of Employment and Investment, Open File 1999-6
Documentdossier public
Mediapapier; disquette; numérique; en ligne
Référence reliéeCette publication remplace Cook, S J; Jackaman, W; Friske, P W; Day, S J; Coneys, A M; Ferri, F; (1997). Regional lake sediment and water geochemistry of the northern Kechika Trough, British Columbia (NTS 94M/2, 3, 4, 5, 6, 12; 104P/8, 9, 10, 15, 16), Commission géologique du Canada, Dossier public 3499
Formatscsv; doc; pdf
SNRC94L/13NE; 94L/14NW; 94L/14NE; 94L/15NW; 94M/02SW; 94M/03; 94M/04; 94M/05SW; 104P/01; 104P/08; 104P/07; 104P/06NW; 104P/10SW; 104P/11; 104P/12; 104P/13SW; 104O/09NE; 104O/15SE; 104O/15NE; 104O/16
Lat/Long OENS-128.6667 -126.7833 60.0000 58.3750
Sujetsméthodes analytiques; géochimie des sediments lacustres; géochimie de l'eau; géochimie du zinc; géochimie du cadmium; géochimie du plomb; géochimie du baryum; sulfate; géochimie du mercure; géochimie de l'or; géochimie du molybdène; géochimie du cobalt; géochimie du nickel; géochimie de l'antimoine; géochimie de l'argent; géochimie de l'arsenic; acidité; analyses; analyses des éléments en trace; analyses géochimiques; géochimie des sédiments de cours d'eau; levés géochimiques; géochimie du platine; géochimie du palladium; géochimie; géologie économique; Phanérozoïque; Paléozoïque; Carbonifère; Mississippien; Dévonien; Ordovicien; Cambrien; Protérozoïque
Illustrationslocation maps; sketch maps; photographs; tables; diagrams; scatter diagrams; pie charts; bar graphs
Points de vente
[Rapport et données numériques gsco]
Diffusé1999 01 01; 2019 02 07
Résumé(disponible en anglais seulement)
Open File 1999-6 presents new analytical results for a regional lake water geochemical survey conducted in 1996 in the northern Kechika Trough area of northern British Columbia. The survey, covering parts of the Rabbit River (NTS 94M) and McDame (NTS 104P) map areas, encompasses an approximately 5000 square kilometre-area of known high mineral potential for sedimentary-exhalative style zinc-lead-barium deposits. Exploration has been limited here by extensive drift cover and poor bedrock exposure.
The survey was conducted in conjunction with a lake sediment geochemical survey, analytical data for which has been previously released (Cook et al., l 997c). Surface waters were collected, at every second sediment site, from a total of 235 sites at an average density of approximately one site per 21.3 square kilometres. The waters were filtered and acidified, and analyzed for a suite of (i) major elements by inductively coupled plasma-atomic emission spectroscopy (ICP-AES), and (ii) trace elements by inductively coupled plasma-mass spectrometry (ICP-MS) at the Geological Survey of Canada, Ottawa, Ontario. The standard Regional Geochemical Survey (RGS) suite of elements (U, F, sulphate, pH) was also measured in all water samples. Several additional constituents including total alkalinity, conductivity and total dissolved solids were also determined.
The alkaline lake waters in this area are characterized by high concentrations of calcium and magnesium, and by high pH, relative to lakes in some other flat-lying parts of B.C., such as the Nechako Plateau. Preliminary discussion of data for several elements indicate that the survey results confirm the locations of some currently known prospects. In addition, the element distribution maps given here are complemented by a series of ratio maps which may assist in identifying areas of potential porphyry-style alteration and mineralization.