Abstract: Regional till geochemistry surveys were conducted in the Finlayson Lake, Glenlyon and eastern Carmacks map areas. Detailed till sampling was completed at the Kudz Ze Kayah and Clear Lake massive sulphide deposits to evaluate glacial dispersal near mineralized rock in a mountainous region and a plateau, respectively. A comparative evaluation of the silt-and-clay-sized fraction versus the clay-sized fraction geochemistry indicates that the clay-sized fraction presents higher metal concentrations than the silt and clay, but both size fractions generally delineate the same base metal exploration targets. The correlation between the high gold concentrations in both size fractions is not as good as for base metals because gold occurrences are only refl ected in the silt- or clay-sized particles of till. The beryllium content of till might provide an indication of the occurrence of beryl in bedrock but the low analytical precision of beryllium analyses limits this approach.

Authors: Plouffe, A. and Bond, J.D.

Keywords: mineral potential, Surficial Geology

NTS Mapsheet(s): 115I01, 115I08, 115I09, 115I16, 105G

Citation: Plouffe, A. and Bond, J.D., 2004. Drift prospecting in the region of the Yukon-Tanana Terrane, southern Yukon. In: Yukon Exploration and Geology 2003, Emond, D.S. and Lewis, L.L. (eds.), Yukon Geological Survey, p. 221-257.

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