Results: 1 - 3 of 3
Sep 30, 2001
Geo-Note
… the minerals industry. The sub-Cretaceous unconformity in the Fort … deposition between the lower Upper Devonian Waterways Formation carbonate of the Upper Beaverhill Lake Group and …
Dec 31, 1957
Bulletin
… Lower Cenomanian substage of the Upper Cretaceous. Lithologic sections are … John area. The Lower Cretaceous-Upper Cretaceous boundary occurs at …
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 …