CORRELATION OF THE CRETACEOUS-TERTIARY TRANSITION IN SASKATCHEWAN AND ALBERTA

Abstract

The author9s earlier conclusions on Cretaceous-Tertiary correlations on the Canadian great plains are reviewed in the light of recent studies by various workers. The stratigraphical sequence in the five main sections of Cretaceous-Tertiary formations is summarized. Revised correlations are given between the sections in southwestern Saskatchewan and southeastern Alberta, southeastern and southwestern Alberta, southeastern Alberta and the central Alberta plains, southwestern Alberta and the central Alberta plains, the central Alberta plains and the central Alberta foothills. Most of the previous conclusions have been supported or confirmed by later work, but others are still subject to revision. The most important change required in the writer9s earlier interpretation is the extension of the time range of the Edmonton formation to include a portion equivalent to part of the Lance stage.