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The Duhamel reef is an isolated Upper Devonian Leduc Formation limestone bioherm, situated immediately NNE of the Bashaw reef complex in south-central Alberta. Although Duhamel has a relatively small basal area (less than 12 km 2 ), this reef rises some 275 m above the platform facies. From seismic data we interpret that there is a raised peripheral reef rim that appears to be elevated about...
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