|Latitude & Longitude (WGS84):||44° 37' 23'' North , 103° 56' 24'' West|
|Latitude & Longitude (decimal):||44.62305,-103.94000|
|Köppen climate type:||BSk : Cold semi-arid (steppe) climate|
PERS COM BLACK HILLS CLAY PROD CO, OPER: BLACK HILLS CLAY PR
Commodities (Major) - Clay
Development Status: Producer
Regions containing this locality
|North America Plate||Tectonic Plate|
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
No minerals currently recorded for this locality.
List of minerals for each chemical element
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
66 - 100.5 Ma
|Mesozoic sedimentary rocks|
Age: Late Cretaceous (66 - 100.5 Ma)
Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. 
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).
Comments: Original map source: Martin, J.E., Sawyer, J.F., Fahrenbach, M.D., Tomhave, D.W., and Schulz, L.D., 2004, Geologic Map of South Dakota: South Dakota Geological Survey, GM 10, scale 1:500,000.
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.