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Dec 31, 1966
Bulletin
… … The Lower Cretaceous Blairmore Group of the … and thin coal beds that form the upper part of the Mannville Group in the Plains. The upper unit consists of lensing, …
Dec 31, 1973
Earth Sciences Report
… Quaternary sands and gravels and Upper Cretaceous Belly River sandstones. …
Dec 31, 1965
Earth Sciences Report
… variable thickness underlain by Upper Cretaceous strata. The surficial … surface. Maximum relief on the upper surfaces of the map-units …