The valley infills are made up of arkosic sandstones with a complex mineralogy.
Deschamps R., Kohler E., Gasparrini M., Durand O., Euzen T., Nader F. 2012, 'Impact of Mineralogy and Diagenesis on Reservoir Quality of the Lower Cretaceous UpperMannville Formation (Alberta, Canada) Impact de la minéralogie et de la diagenèsesur la qualité des réservoirs de la Formation Mannville Supérieur, Crétacé Inférieur(Alberta, Canada)', Oil & Gas Science and Technologyhttp://dx.doi.org/10.2516/ogst/2011153. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)