Digital geologic map of part of the Thompson Falls 1:100,000 quadrangle, Idaho

Reed S. Lewis; Pamela D. Derkey

doi:10.3133/ofr99438

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Digital geologic map of part of the Thompson Falls 1:100,000 quadrangle, Idaho

Reed S. Lewis·Pamela D. Derkey

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Abstract

The geology of the Thompson Falls 1:100,000 quadrangle, Idaho was compiled by Reed S. Lewis in 1997 onto a 1:100,000-scale greenline mylar of the topographic base map for input into a geographic information system (GIS). The resulting digital geologic map GIS can be queried in many ways to produce a variety of geologic maps. Digital base map data files (topography, roads, towns, rivers and lakes, etc.) are not included: they may be obtained from a variety of commercial and government sources. This database is not meant to be used or displayed at any scale larger than 1:100,000 (e.g., 1:62,500 or 1:24,000). The map area is located in north Idaho. This open-file report describes the geologic map units, the methods used to convert the geologic map data into a digital format, the Arc/Info GIS file structures and relationships, and explains how to download the digital files from the U.S. Geological Survey public access World Wide Web site on the Internet.

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Source-reported bounding extent: 47.5° to 48° latitude; -116° to -115° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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BibTeX RIS

Reed S. Lewis, Pamela D. Derkey. 1999. Digital geologic map of part of the Thompson Falls 1:100,000 quadrangle, Idaho. https://doi.org/10.3133/ofr99438

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