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The paper version of The geology of the Challis 1�x2� quadrangle, wascompiled by Fred Fisher, Dave McIntyre and Kate Johnson in 1992. Thegeology was compiled on a 1:250,000 scale topographic base map.TechniGraphic System, Inc. of Fort Collins Colorado digitized this mapunder contract for N.Shock. G.Green edited and prepared the Challisdigital version for publication as a geographic information systemdatabase. The digital geologic map database can be queried in manyways to produce a variety of geologic maps.
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The digital ARC/INFO databases included in this directory provide a geologic map GIS database of the Absaroka-Beartooth study area (ABSA), a tract of approximately 1.4 million acres of National Forest land in southwestern Montana. The ABSA is adjacent to the northern part of Yellowstone National Park, and includes southeastern parts of Gallatin National Forest and western parts of the Custer National Forest. The geologic map was originally prepared to accompany a U.S. Geological Survey evaluation of the mineral resource potential within the ABSA. The results of this mineral resource assessment were published as U.S. Geological Survey Open-File Report 93-207 and the geologic map was plate 1 of this report. The enclosed...
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The digital ARC/INFO databases included in this directory provide a geologic map GIS database of the Custer National Forest in the Pryor Mountains of south-central Montana. The geologic map area comprises approximately 122 square miles (316 square kilometers) of National Forest lands, located 40 miles (64 kilometers) south of Billings, Montana. This geologic map was originally prepared to accompany a U.S. Geological Survey evaluation of the mineral resource potential of the Custer National Forest in the Pryor Mountains. The results of this mineral resource assessment were published as U.S. Geological Survey Open-File Report 96-256. This ARC/INFO database was created from figure 2 (p. 4) of that report.
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The digital ARC/INFO databases included in this websiteprovide a GIS database for the geologic map of theDillon 1 degree by 2 degree quadrangle of southwestMontana and east-central Idaho. The geologic mapwas orginally published as U.S. Geological SurveyMiscellaneous Investigations Series Map I-1803-H.This website directory contains ARC/INFO format filesthat can be used to query or display the geology ofUSGS Map I-1803-H with GIS software.
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The geology of western and northern Gallatin National Forest was mapped in two parts as part of an evaluation of its mineral resource potential by the USGS. Previously, the western part was released as Map A and the northern part as Map B of USGS Geologic Investigations Series Map I-2584. These maps were compiled, digitized, and produced using the USGS software program GSMAP. All the original source maps were simplified on mylar overlays, digitized at their original map scales and projections, and then merged into the final maps. After editing, the digital maps were filtered to remove all points not necessary for improving resolution at a scale of 1:126,720 (2 mi per in., the scale used by the USDA Forest Service)....
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The geology of western and northern Gallatin National Forest was mapped in two parts as part of an evaluation of its mineral resource potential by the USGS. Previously, the western part was released as Map A and the northern part as Map B of USGS Geologic Investigations Series Map I-2584. These maps were compiled, digitized, and produced using the USGS software program GSMAP. All the original source maps were simplified on mylar overlays, digitized at their original map scales and projections, and then merged into the final maps. After editing, the digital maps were filtered to remove all points not necessary for improving resolution at a scale of 1:126,720 (2 mi per in., the scale used by the USDA Forest Service)....
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This data set maps and describes the geology of the Cougar Buttes 7.5'quadrangle, San Bernardino County, California. Created usingEnvironmental Systems Research Institute's ARC/INFO software, the database consists of the following items: (1) a map coverage showinggeologic contacts and units, (2) a separate coverage layer showingstructural data, (3) a scanned topographic base at a scale of 1:24,000,and (4) attribute tables for geologic units (polygons), contacts (arcs),and site-specific data (points). The data base is accompanied by areadme file and this metadata file. In addition, the data set includesthe following graphic and text products: (1) A portable document file(.pdf) containing a browse-graphic of the geologic...
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New 1:24,000-scale geologic mapping in the Cuyama 30' x 60' quadrangle, in support of the USGS Southern California Areal Mapping Project (SCAMP), is contributing to a more complete understanding of the stratigraphy, structure, and tectonic evolution of the complex junction area between the NW-striking Coast Ranges and EW-striking western Transverse Ranges. The 1:24,000-scale geologic map of the San Guillermo Mountain quadrangle is one of six contiguous 7 1/2' quadrangle geologic maps in the eastern part of the Cuyama map area being compiled for a more detailed portrayal and reevaluation of geologic structures and rock units shown on previous geologic maps of the area (e.g., Dibblee, 1979). The following observations...


    map background search result map search result map Geologic map of the Dillon 1�x2� quadrangle, Idaho and Montana Geologic Map of the Challis 1�x2� Quadrangle, Idaho Geologic Map and Digital Database of the Cougar Buttes 7.5'Quadrangle, San Bernardino County, California Preliminary geologic map of the San Guillermo Mountain quadrangle, Ventura County, California, version 1.0 Geologic map datasets of the Custer and Gallatin National Forestsof South-central Montana, in ARC/INFO format: Absaroka-Beartooth study area Geologic map datasets of the Custer and Gallatin National Forestsof South-central Montana, in ARC/INFO format: Northern portion Geologic map datasets of the Custer and Gallatin National Forestsof South-central Montana, in ARC/INFO format: Pryor Mountains Geologic map datasets of the Custer and Gallatin National Forestsof South-central Montana, in ARC/INFO format: Western portion Preliminary geologic map of the San Guillermo Mountain quadrangle, Ventura County, California, version 1.0 Geologic Map and Digital Database of the Cougar Buttes 7.5'Quadrangle, San Bernardino County, California Geologic map datasets of the Custer and Gallatin National Forestsof South-central Montana, in ARC/INFO format: Pryor Mountains Geologic map datasets of the Custer and Gallatin National Forestsof South-central Montana, in ARC/INFO format: Northern portion Geologic map datasets of the Custer and Gallatin National Forestsof South-central Montana, in ARC/INFO format: Western portion Geologic map datasets of the Custer and Gallatin National Forestsof South-central Montana, in ARC/INFO format: Absaroka-Beartooth study area Geologic map of the Dillon 1�x2� quadrangle, Idaho and Montana Geologic Map of the Challis 1�x2� Quadrangle, Idaho