This is an Arc/Info database version of USGS Bulletin 2064-A, Plate 1, from R.G. Worl and K.M. Johnson, 1995, Geology and mineral deposits of the Hailey 1x2 quadrangle and the western part of the Idaho Falls 1x2 quadrangle, south-central Idaho -- An overview, and is titled "Map showing geologic terranes of the Hailey 1x2 quadrangle and the western part of the Idaho Falls 1x2 quadrangle, south-central Idaho". The original stable base printing sheets were digitized and attributed for Nancy Shock by TechniGraphic System, Inc. of Fort Collins Colorado. Greg Green edited and prepared the digital version for release as a GIS database.