his focus is teaching and research on the stratigraphy and sedimentology of sedimentary basins. His particular interest is in sequence stratigraphy, the sedimentology of nonmarine sandstones, and their characteristics as reservoir rocks for non-renewable resources, and the nature of the preservation of time in the stratigraphic record. He was the inaugural holder of the Gordon Stollery Chair in Basin Analysis and Petroleum Geology, which was founded in 2001. He was elected a Fellow of the Royal Society of Canada in 1995. He retired at the end of 2020.