Case History Study

Video programs on computers can assist in the collection and production of geologic maps, including complete shade maps of publication top quality. This paper describes the application of two different programs, GSMAP and ARC/INFO, to the production of a geologic map of the Port Meller and nearby 1:250,000-range quadrangles on the Alaska Peninsula. Limitations in its editing and enhancing capability resulted in transfer of the digital information to ARC/INFO, a Geographic Information System, which has better modifying and added information evaluation ability. It permits digital map information to be refined as one of numerous data layers for mineral source analysis. As an outcome of growth of both software bundles, it is now much easier to use both software packages to geologic map production.

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