Professor Gleadow has pioneered fission track analysis in Australia as a tool for geological dating and thermochronology. These techniques have been applied widely to studies of continental extension tectonics, hominid evolution and sedimentary basin analysis. Current developments include a revolutionary method for terrain imaging giving an unprecedented ability to reconstruct past landscapes on a continental scale. His work has established Australia clearly at the forefront of this field and has been recognised by the Royal Society of Victoria Research Medal, the Stillwell Medal of the Geological Society of Australia and the AINSE Gold Medal for Excellence in Research.