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Geologic map of the Lookout Ridge quadrangle, compiled from previously published and unpublished sources. This map is part of a collection of digital maps of northern Alaska, that span the transition from the Brooks Range to the Arctic coastal plain.
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The paper version of the Geologic Map of the eastern part of the Challis National Forest and vicinity, Idaho was compiled by Anna Wilson and Betty Skipp in 1994. The geology was compiled on a 1:250,000 scale topographic base map. TechniGraphic System, Inc. of Fort Collins Colorado digitized this map under contract for N.Shock. G.Green edited and prepared the digital version for publication as a GIS database. The digital geologic map database can be queried in many ways to produce a variety of geologic maps.


map background search result map search result map Geologic map of the Lookout Ridge quadrangle, Alaska Geologic Map of the eastern part of the Challis National Forest and vicinity, Idaho Geologic Map of the eastern part of the Challis National Forest and vicinity, Idaho Geologic map of the Lookout Ridge quadrangle, Alaska