Abstract: New mineral discoveries in the Dawson Range have been heavily supported by soil geochemistry. The use of soil augers to penetrate through loess-rich units and into locally derived weathered bedrock has been important in the successful application of this technique. To assist the mineral exploration industry, we characterized the surficial geology, soils and permafrost of the northern Dawson Range. Mapping indicated that widespread loess is present in the study area and the thickest deposits are located in basins on the south side of the Dawson Range near the Donjek and White rivers. A mantle of weathered bedrock covers virtually the entire landscape. The texture of fluvial deposits is affected by stream order and base level changes along the Yukon River. By understanding the effects of slope, aspect, elevation and permafrost processes on surficial materials, a landscape model can be developed that will facilitate geochemical exploration and mineral development in the region.

Authors: Bond, J.D. and Lipovsky, P.S.

Keywords: fluvial deposit, Mineral Exploration, soil geochemistry

NTS Mapsheet(s): 115G, 115J

Citation: Bond, J.D. and Lipovsky, P.S., 2011. Surficial geology, soils and permafrost of the northern Dawson Range. In: Yukon Exploration and Geology 2010, MacFarlane, K.E., Weston, L.H., and Relf, C. (eds.), Yukon Geological Survey, 19-32.

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