Horner Mountain Mine, Shannon Co., Missouri, USA
|Latitude & Longitude (WGS84):||37° 5' 22'' North , 91° 14' 55'' West|
|Latitude & Longitude (decimal):||37.08947,-91.24873|
|Köppen climate type:||Cfa : Humid subtropical climate|
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11 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.
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470 - 485.4 Ma
Age: Early Ordovician (470 - 485.4 Ma)
Stratigraphic Name: Gasconade Dolomite
Comments: IN SOUTHEAST MO-Gasconade Dolomite- (700 ft max) coarsely crystalline cherty dolomite with basal sandstone member; Gunter Sandstone Member- (30 ft. max) quartzose sandstone. Host to barite deposits on the northwest flank of Ozark Uplift.
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.