Geology of the Conterminous United States at 1:2,500,000 Scale -- A Digital Representation of the 1974 P.B. King and H.M. Beikman Map

A geographic information system (GIS) allows combining and overlaying of layers for analysis of spatial relations not readily apparent in the standard paper publication. This disc contains only geology. However, digital data on geology, geophysics, and geochemistry can be combined to create useful derivative products-- for example, see Phillips and others (1993).

This CD-ROM contains a copy of the text and figures from Professional Paper 901 by King and Beikman (1974a). This text describes the historical background of the map, details of the compilation process, and limitations to interpretation. The digital version of the text can be searched for keywords or phrases.

For DOS users, the CD-ROM contains menu-driven analytical software, in which the user selects from an array of topics. The CD-ROM also contains MAPPER display software, a user-friendly package that displays the interactive vector map. The raster image of the geologic map can be displayed with VIEWLBL.

For other types of computer users, the map must be converted from one of the following formats included on the CD-ROM: ARC/INFO 6.1.1 Export Digital Line Graph (DLG) Optional Drawing Exchange File (DXF) Map Overlay Statistical System (MOSS)