Title: Geology of the conterminous United States at 1:2,500,000 scale
Description: A menu-driven digital version of King and Beikman's 1974 map, with a searchable copy of the text and figures from their Professional Paper 901 describing the map's historical background and limitations. Data provided in the U.S. Geological Survey Mapper for DOS, ARC/INFO version 6.1.1 Export, Digital Line Graph (DLG) Optional, Map Overlay Statistical System (MOSS), and Drawing Exchange File (DXF) formats.
Subjects: Geology, Maps, Databases
Places: United States