Digital Geologic-GIS Map of the Hells Canyon Quadrangle, Colorado (NPS, GRD, GRI, DINO, HECA digital map) adapted from a U.S. Geological Survey Geologic Quadrangle Map by Hansen and Rowley (1980)
The Digital Geologic-GIS Map of the Hells Canyon Quadrangle, Colorado is composed of GIS data layers and GIS tables, and is available in the following GRI-supported GIS data formats: 1.) an ESRI file geodatabase (heca_geology.gdb), and a 2.) Open Geospatial Consortium (OGC) geopackage. The file geodatabase format is …