|Latitude & Longitude (WGS84):||35° 31' 0'' North , 95° 57' 30'' West|
|Latitude & Longitude (decimal):||35.51667,-95.95833|
|Köppen climate type:||Cfa : Humid subtropical climate|
Ref.: Rocks & Minerals: 72(4): 252-264.
Mineralization is on area coal mine dumps.
4 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
252.17 - 541 Ma
|Paleozoic sedimentary rocks|
Age: Paleozoic (252.17 - 541 Ma)
Lithology: Sedimentary rocks
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. 
298.9 - 323.2 Ma
Age: Pennsylvanian (298.9 - 323.2 Ma)
Stratigraphic Name: Calvin Sandstone
Description: OKLAHOMA CITY- Medium-grained, thin-bedded to massive sandstone nd silty shale. Thickness ranges from 230 to about 440 feet. FORT SMITH- Shale and sandstone. ARDMORE-SHERMAN- Sandstone, brown, medium-grained, with some gray shale; thickness, 40 to 320 feet, thinner southward.
Comments: Area of Coalgate quad, Coal and Hughes Cos, OK in Arkoma basin and Chautauqua platform where unit is exposed in north-central and western parts of quad. Composed of massive and thin-bedded sandstone with some shaly beds in upper part, 140-240 ft thick. For nearly 140 ft upward from base, is massive but not very hard sandstone. In southern part of outcrop, lower sandy member becomes shaly, and even the massive beds which occur are more friable than same deposits in northern part of quad. Near middle of lower sandstone member, west of Sand Creek, there is a shaly and slightly calcareous bed which contains hematite; bright-red color of this bed upon weathering is a characterisitic feature of unit. Upper part of unit is least shaly in northern part of area, and many beds are hard and weather into slabs and hard plates. Upper 90-100 ft here contains two, and in places more, shaly beds 10-20 ft thick. Sandstone beds of this upper portion decrease southwestward from 40 ft to thin layers interstratified with shales. (Taff, 1901).
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.