Sphalerite Occurrence Z73, Madison Co., Indiana, USA
|Latitude & Longitude (WGS84):||40° 1' 45'' North , 85° 43' 15'' West|
|Latitude & Longitude (decimal):||40.02917,-85.72083|
|Köppen climate type:||Dfa : Hot-summer humid continental climate|
Commodities (Major) - Zinc; (Trace) - Sulfur
Development Status: Occurrence
Host Rock Unit: Blue River Group: includes Paoli, Ste Genevieve And St Louis Limestones
Structure: Just east Of Fortville Fault
Host Rock: Limestone
Tectonic Structure: Atop Cincinnati Arch (a stable platform between the Michigan and Illinois Basins.
3 valid minerals.
Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
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
358.9 - 419.2 Ma
Age: Devonian (358.9 - 419.2 Ma)
Stratigraphic Name: Muscatatuck Group
Comments: On the paper state map, there are two units, both with the same map pattern, labeled "D" and "D1". The only difference appears to be the relative abundance of the two major lithologies, limestone and dolomite. On the digital map, the unit is not subdivided.
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.