Named in honor of Gerald G. Schaber, geologist with the U.S. Geological Survey and chief of the branch of astrogeology since 1983. Schaber is specially recognized for his research on the geology of the Moon, Mercury, Venus, Mars and the satellite Io and for the application of radar to the investigation of the terrestrial planets. He was a codiscoverer, with J. F. McCauley and C. S. Breed, of the ancient buried river channels of the western desert of Egypt. (M 10549) _ _.