He was elected Fellow of the
Royal Society of Canada at age 38, a very rare accolade, and 15 years later was awarded the
Miller Medal by its Academy of Science. First winner of the R.J.W. Douglas Medal of the
Canadian Society of Petroleum Geologists, he was also the first geoscientist to be awarded an
Isaac Walton Killam Memorial Fellowship and the first scientist of any kind to hold this award for four full years. He has over 250 publications to his credit and for several years in the past three decades has been the most cited Canadian geoscientist in the world. Williams was among the first to describe the evidence for the existence of the
Iapetus Ocean, the predecessor of the modern
Atlantic Ocean. A sampling of these rocks is preserved and protected in
Gros Morne National Park of western Newfoundland, which has qualified for
UNESCO World Heritage Site recognition under his advocacy. Williams is perhaps best known for producing the world's first tectonic lithofacies map and the first geological map of the entire
Appalachian Mountains in the
U.S. and
Canada in 1978. == Awards ==