Selected publications


  • Last, W. M. and Ginn, F. M., 2007 Clay Mineralogy. Final Report to PetroCanada. 65 p.

  • Ahmed, M., and Last, W. M., 1991, Deposition and diagenesis of the MC3 Member of the Mission Canyon Formation, Pierson Field, Manitoba. In: Christopher, J.E., and Haidl, F. M. (eds.), Proceedings 6th International Williston Basin Symposium, Saskatchewan Geological Society Special Publication Number 11, pp. 123-129. pdf


  • Last, W. M., and Edwards, W.W., 1991, Petrology of the Middle Bakken Member in the Daly Field, Southwestern Manitoba. In: Christopher, J.E., and Haidl, F. M. (eds.), Proceedings 6th International Williston Basin Symposium, Saskatchewan Geological Society Special Publication Number 11, pp. 64-69. pdf


  • Last, W. M. and Edwards, W., 1989, Sedimentology and Reservoir Quality of the Bakken Formation in Manitoba. Final Report to Petroleum Aid to Education, 65 p.

  • Rosenthal, L. and Last, W. M., 1987, The Winnipegosis Formation on the Northeastern Margin of the Williston Basin. Proc. 2nd Internat. Symp. Devonian System, Abst. Vol., p. 197.

  • Last, W. M., 1986, The Exshaw Formation: Geochemistry of a Major Source Rock in Western Canada. In: Proc. Manstrat Conference, University of Manitoba, p. 24-30. pdf


  • Kovac, L. J., and Last, W. M., 1983, Potential Cretaceous Oil Shales of Western Canada. Geol. Soc. Amer., v. 15, no. 6, p. 618.

  • Last, W. M., 1983, Oil Shales of Manitoba. Report to Manitoba Department of Energy and Mines, 19 pages.


  • Tilley, B. J., and Last, W. M., 1980, Fluvial and Deltaic Sedimentology of the Upper Mannville in East-central Alberta. Sask. Geol. Soc. Spec. Paper No. 5, p. 217. (invited presentation).

  • Last, W. M., 1975, The Exshaw Formation in Western Canada, Source Rock Potential, Internal Report to Shell Canada Ltd., 168 pages.

  • Last, W. M., 1970, Stratigraphy of the Middle Devonian Sequence in Southwestern Wisconsin. In: The Second Annual Wisconsin University Geological Field Conference, The Upper Mississippi Valley Zinc Lead District, p. 35-46.