Vector-based digital maps of the geology and resource assessment of the Venezuela Guayana Shield originally published as paper maps in 1993 as USGS Bulletin 2062, at a scale of 1:1,000,000 and revised in 1993-95 as separate maps at a scale of 1:500,000. Data layers include geology and faults, favorable domains for selected deposit types, and mineral deposits. The CD can be used on Macintosh; DOS, Windows 3.x, 95, or NT; or UNIX platforms. Acrobat for Macintosh, Windows, and UNIX as well as ArcView 1 for Windows 3.x are included on the CD. Macintosh <(>&<)> UNIX compatible.