Abstract: Aggregate is an integral resource for the development of Whitehorse. The City of Whitehorse receives much of its gravel from private quarries located within city limits; this benefits the city by reducing the transportation costs associated with hauling aggregate from outside of the city. Anticipated growth and development places an increased demand on locally sourced aggregate required for construction. While new quarries are vital for growth, it is important that resource extraction be maximized near existing quarries in order to take advantage of existing infrastructure. The goal of this project is to gain a better estimate of the quality and quantity of aggregate at four sites in the vicinity of Whitehorse.

Four locations in the Whitehorse area were investigated for their aggregate potential: 1) McLean Lake, 60°38’20.62”N 135°04’06.75” W; 2) km 196 North Klondike Highway (Takhini Bridge); 3) Haekle Hill/Alaska Highway (60°48’17.77N 135°13’36.95”W, 761 m asl); and 4) Long Lake (road site 60°45’26.19N 135°02’34.42”W, 723 m asl).

Authors: Laxton, S. and Coates, J.

Keywords: aggregate, grain size analysis, ground penetrating radar, induced polarization, Long Lake, McLean Lake, resistivity, sonic drilling, Takhini

NTS Mapsheet(s): 105D11

Citation: Laxton, S. and Coates, J., 2015. Geophysical and borehole investigation of aggregate resources in the Whitehorse area, Yukon. Yukon Geological Survey, Open File 2015-1, 24 p.

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