Unpublished Digital Geologic-GIS Map of Great Sand Dunes National Park, Colorado (NPS, GRD, GRI, GRSA, GRSA digital map) adapted from a U.S. Geological Survey Scientific Investigations Map by Madole, VanSistine and Romig (2016)
The Unpublished Digital Geologic-GIS Map of Great Sand Dunes National Park, Colorado is composed of GIS data layers and GIS tables in a 10.1 file geodatabase (grsa_geology.gdb), a 10.1 ArcMap (.mxd) map document (grsa_geology.mxd), individual 10.1 layer (.lyr) files for each GIS data layer, an ancillary map …