Digital Geologic-GIS Map of Fort Donelson National Battlefield and Vicinity, Kentucky and Tennessee (NPS, GRD, GRI, FODO, FODO digital map) adapted from Tennessee Division of Geology Geologic Quadrangle Maps by Marcher, Larson, and Barnes and Hershey (1965, 1965, 1965 and 1967), a Kentucky Geological Survey Digitally Vectorized Geological Quadrangle map by Tyra (2002), and a U.S. Geological Survey Geologic Quadrangle Map by Blade (1966) - fodo_geology_metadata_faq.pdf - AmeriGEOSS Community Platform DataHub. (BETA)

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