Wikimedi'Òc

Rock Formations- Harding County South Dakota.JPG - Circa24

Black Hills angular deformity.jpg - Rehua

Fallingrock.jpg - Clpo13

NPS wind-cave-geologic-map.jpg - RKBot

White River Badlands of South Dakota panorama.jpg - Tillman

Pegmatitic granite (White Cap Pegmatite, Paleoproterozoic, ~1.7 Ga; White Cap Mine, east of Keystone, Black Hills, South Dakota, USA) 10 (23245106424).jpg - Rudolphous

Uraninite-bearing pegmatitic granite (White Cap Pegmatite, Paleoproterozoic, ~1.7 Ga; White Cap Mine, Black Hills, South Dakota, USA) 1 (23507221899).jpg - Rudolphous

Pegmatitic granite (White Cap Pegmatite, Paleoproterozoic, ~1.7 Ga; White Cap Mine, east of Keystone, Black Hills, South Dakota, USA) 12 (23790764201).jpg - Rudolphous

Muscovite schist (Paleoproterozoic; Black Hills, South Dakota, USA) 1 (31976654940).jpg - Rudolphous

Harney Peak Granite (late Paleoproterozoic, 1.695 to 1.715 Ga; Thunderhead Mountain, Black Hills, South Dakota, USA) 1 (34436435206).jpg - Rudolphous

Harney Peak Granite (late Paleoproterozoic, 1.695 to 1.715 Ga; Needles, Black Hills, South Dakota, USA) (38366807454).jpg - Rudolphous

Williston Basin stratigraphic column.jpg - Pi3.124

Geological Formations - Other - South Dakota - DPLA - 5127e2667f4af945de77ecca96888fab.jpg - DPLA bot

Geological Formations - Other - South Dakota - DPLA - 2c5707807d9099c896cba170187dc3b0.jpg - DPLA bot