What was the nationality of the geophysicist and meteorologist who's theory of continental drift was supported by  Alexander Logie du Toit FRS?.
Alexander du Toit Alexander Logie du Toit FRS ( ; 14 March 1878 – 25 February 1948) was a geologist from South Africa, and an early supporter of Alfred Wegener's theory of continental drift.
Paul F. Hoffman Paul Felix Hoffman, FRSC, OC (born March 21, 1941) is a Canadian geologist and Sturgis Hooper Professor Emeritus of Geology at Harvard University. He specializes in the Precambrian era and is widely known for the theory of the Snowball Earth about phenomena that occurred in the Neoproterozoic era, co-published with Daniel P. Schrag.