Results: 1 - 5 of 5
Sep 26, 2017
Data
… from Lower Jurassic to Lower Cretaceous strata of the southern … of the Jurassic through Lower Cretaceous strata of the Rocky … of the Jurassic through Lower Cretaceous Strata of the Rocky …
Sep 26, 2017
Open File Report
… from Lower Jurassic to Lower Cretaceous strata of the southern … of the Jurassic through Lower Cretaceous strata of the Rocky … of the Jurassic through Lower Cretaceous Strata of the Rocky …
Aug 31, 1983
Open File Report
… framework of Lower Cretaceous coal-bearing rocks in … framework of Lower Cretaceous coal-bearing rocks in … Framework of Lower Cretaceous Coal-Bearing Rocks in …
Dec 31, 1957
Bulletin
… Cenomanian substage of the Upper Cretaceous. Lithologic sections are … Fort St. John area. The Lower Cretaceous-Upper Cretaceous boundary occurs at a …
Jul 31, 2003
Geo-Note
… and with the Devonian-Cretaceous unconformity. Vertical …