Last Chance Mine, Morgan Co., Missouri, USA
|Latitude & Longitude (WGS84):||38° 36' 8'' North , 93° 0' 10'' West|
|Latitude & Longitude (decimal):||38.60224,-93.00293|
|Köppen climate type:||Cfa : Humid subtropical climate|
Ref.: Dana 6: 904.
1 valid mineral.
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. 
470 - 485.4 Ma
|Smithville Dolomite, Powell Dolomite, Cotter Dolomite, Jefferson City Dolomite|
Age: Early Ordovician (470 - 485.4 Ma)
Comments: IN SOUTHEAST MO-Smithville Dolomite- (150 ft. max) cherty dolomite; Powell Dolomite- (175 ft. max) dolomite with thin beds of sandstone and shale; Cotter Dolomite- (459 ft. max) oolitic dolomite with thin beds of sandstone and shale; Jefferson City Dolomite- (350 ft. max) dolomite with lens of conglomerate and shale. Jefferson City Dolomite is 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.