Runge Mine, Edgemont Uranium District, Fall River Co., South Dakota, USA
|Latitude & Longitude (WGS84):||43° 22' 60'' North , 103° 49' 2'' West|
|Latitude & Longitude (decimal):||43.38329,-103.81724|
|Köppen climate type:||BSk : Cold semi-arid (steppe) climate|
Black ore type of vanadium/uranium deposit.
Mineral ListMineral list contains entries from the region specified including sub-localities
13 valid minerals.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
100.5 - 145 Ma
|Inyan Kara Group|
Age: Early Cretaceous (100.5 - 145 Ma)
Stratigraphic Name: Inyan Kara Group
Description: Includes: Fall River Formation- Variegated brown, red, gray to purple, calcareous, well-sorted, fine-grained sandstone, siltstone, and shale containing mica flakes. Thickness 100-200 ft (30-61 m). Lakota Formation- Yellow, brown, red-brown, gray to black silty shale, pebble conglomerate, and massive to thin-bedded, cross-bedded sandstone. Locally interbedded with fresh-water limestone and bituminous coal beds. Thickness 35-500 ft (11-152 m).
Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052.