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Federal
Digital Bedrock Geologic-GIS Map of the North, South, and Heritage Addition Units and Vicinity, Effigy Mounds National Monument, Iowa (NPS, GRD, GRI, EFMO, EFMO_bedrock digital map) adapted from a Iowa Geological Survey Open-File Map by Witzke and Anderson (2006)
Department of the Interior —
The Digital Bedrock Geologic-GIS Map of the North, South, and Heritage Addition Units and Vicinity, Effigy Mounds National Monument, Iowa is composed of GIS data... -
Federal
Digital Bedrock Geologic-GIS Map of the Sny Magill Unit and Vicinity, Effigy Mounds National Monument, Iowa (NPS, GRD, GRI, EFMO, CLYT_bedrock digital map) adapted from a Iowa Geological and Water Survey Open-File Map by Witzke, Anderson, and Pope (2010)
Department of the Interior —
The Digital Bedrock Geologic-GIS Map of the Sny Magill Unit and Vicinity, Effigy Mounds National Monument, Iowa is composed of GIS data layers and GIS tables, and is...