On November 20th, GIS Day, the USGS will commemorate their commitment to GIS. In spite of all the new technologies for mapping currently, the USGS would like to remind people that for the past 130 years, it has been the primary producer of topographic data for the U.S. and is producing its own new and emerging geospatial technologies and products.
Geologic map of the Holy Cross quadrangle, Colorado.
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