Exploration and mining in the Southeast Region, British Columbia Fiona Katay1, a 1 Regional Geologist, British Columbia Ministry of Energy, Mines and Petroleum Resources, 202-100 Cranbrook Street N, Cranbrook, BC, V1C 3P9 a corresponding author:
[email protected] Recommended citation: Katay, F., 2018. Exploration and mining in the Southeast Region, British Columbia. In: Provincial Overview of Exploration and Mining in British Columbia, 2017. British Columbia Ministry of Energy, Mines and Petroleum Resources, British Columbia Geological Survey, Information Circular 2018-1, pp. 57-84. 1. Introduction passive-margin, shelf, and slope carbonate and siliciclastic The Southeast Region, in the southeast corner of the province successions that were deposited on the western fl ank of the (Fig. 1), offers a variety of mining and exploration opportunities ancient continent (Kootenay terrane, and North American accessible by well-developed infrastructure. Five operating platform); and Jurassic to Cretaceous foreland basin deposits. metallurgical coal mines in the Elk Valley account for most of It also contains parts of the Slide Mountain terrane, which Canada’s coal production and exports. Several mines produce records mid- to late- Paleozoic back-arc extension that split industrial minerals including silica, magnesite, gypsum, the western fl ank of ancestral North America to form the Slide graphite, and phosphate. Placer mining occurs throughout the Mountain ocean, and Quesnellia and its basement (Okanagan region, and several small operations produce aggregate, sand subterrane), which are entirely exotic to North America (Nelson and gravel, and dimension stone. The region also hosts the and Colpron, 2007; Nelson et al., 2013). By mid-Jurassic, the historic lead-zinc-silver Sullivan Mine, which operated from emerging Canadian Cordillera had been transformed from 1909 to 2001, and produced more than 7.9 Mt of zinc, 8.4 Mt of a set of loosely connected arc and pericratonic terranes, to a lead, and 298 Moz of silver.