| http://www.w3.org/ns/prov#value | - Thrust belt geologyWe somewhat arbitrarily divide the North American thrust belt into six regions or salients, three of which are productive (Fig. 1).Production was first discovered in the northern or Canadian salient at an oil seep in Turner Valley, southwest of Calgary, in 1924.The central portion we call the Wyoming salient, discovered at Pineview, Utah, and mostly in Wyoming, is bounded by the
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