 As a field archaeologist Geraty started at Gezer with Darrell Lance as field supervisor. In 1968 he joined Siegfried Horn and Roger Boraas at Tel Hisban. Geraty served the first three seasons there as a field supervisor. In 1974 he took over as director of the Hisban Expedition, which culminated with a final season in 1976. In 1982 Geraty began the Madaba Plains Project with Larry Herr and Øystein LaBianca.
