Colin Kerr Ballantyne FRSE FRSA FRSGS (born 7 June 1951 in Glasgow, Scotland) is a Scottish geomorphologist, geologist, and physical geographer.
from the University of Glasgow, where he was influenced by Robert John Price (1936–2012) to study geomorphology and Quaternary geology.
from Ontario's McMaster University, where he was part of a team led by S. Brian McCann (1935–2004) studying high arctic hydrology and fluvial processes.
As a professor at the University of St Andrews, Ballantyne conducted annual honours field courses in Norway — on one such occasion his students included the future Duke of Cambridge.
[1] Much of Ballantyne's reputation is based upon his reconstruction of the extent and deglaciation chronology of the last British-Irish ice sheet and his 2002 model of paraglacial landscape modification.
He and his co-workers have done research on geomorphological mapping, glaciation, and periglaciation, as well as many related topics such as frost weathering, nivation, solifluction, hydrology, debris flow, rockfall, slope stability, and wind erosion.
In the Hebrides, Ballantyne single-handedly did field mapping and theoretical reconstruction of former glacier limits on all the major islands between Orkney and Arran.