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 Digital Geologic-GIS Map of Great Sand Dunes National Park, Colorado is composed of GIS data layers and GIS tables, and is available in the following GRI-...科罗拉多州大沙丘国家公园数字地质地理信息系统（Geographic Information System，GIS）地图由GIS数据图层与GIS数据表构成，可通过以下GRI-...格式获取。