Jones Mill Quarry (Martin Marietta Quarry; Highway 51 Quarry; Mid-State Quarry), Magnet Cove, Hot Spring Co., Arkansas, USA
|Latitude & Longitude (WGS84):||34° 26' 8'' North , 92° 51' 15'' West|
|Latitude & Longitude (decimal):||34.43583,-92.85444|
|Köppen climate type:||Cfa : Humid subtropical climate|
A huge, active quarry situated on the contact of the Magnet Cove alkaline complex.
91 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
323.2 - 358.9 Ma
Age: Mississippian (323.2 - 358.9 Ma)
Stratigraphic Name: Stanley Shale
Comments: Black shale to slate alternating with sandstone, siltstone some chert and tuff. Approximatly 9500 ft. maximum thickness. Geosynclinal facies-composed mainly of alternating shales and sandstone including some tuffaceous beds (5600 ft.), and fossiliferous siliceous shale and graywacke.
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.