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Geologic and structure maps of the Kalispell 1:250,000 quadrangle, Montana, and Alberta and British Columbia: a digital database.

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https://cmr.earthdata.nasa.gov/search/concepts/C2231550407-CEOS_EXTRA.html
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This dataset was developed to provide geologic map GIS of the Kalispell 1:250,000 quadrangle for use in the future spatial analysis by a variety of users. This database is not meant to be used or displayed at any scale larger than 1:250,000 (e.g., 1:100,000 or 1:24,000). This dataset was digitized by the U.S. Geological Survey EROS Data Center and U.S. Geological Survey Spokane Field Office for input into an Arc/Info geographic information system (GIS). The digital geologic map database can be queried in many ways to produce a variety of derivative geologic maps. This GIS dataset consists of one major Arc/Info dataset: a line and polygon file (kal250k) that contains geologic contacts and structures (lines) and geologic map rock units (polygons).
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CEOS_EXTRA
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