River- and wave-dominated depositional systems of the Upper Cretaceous Dunvegan Formation, northwestern Alberta

Nineteen facies have been grouped into 7 successions. In combination with sand isolith maps, these facies successions are further linked into lithofacies assemblages that define distinct, large-scale depositional systems. The Dunvegan Formation cannot be characterized as a single delta. Rather, it is interpreted here as a stacked series of different types of depositional systems. These prograded to the southeast, with shorelines trending approximately northeast-southwest. Overall there appears to be a decrease in the importance of fluvial processes upward. -from Authors