|Latitude & Longitude (WGS84):||42° 15' 21'' North , 83° 6' 2'' West|
|Latitude & Longitude (decimal):||42.25583,-83.10056|
|Köppen climate type:||Dfa : Hot-summer humid continental climate|
In dolomitic limestone and limy shale.
The main salt bed is 8.2 m thick and is at a depth of 289 m to 297 m below the surface. Another bed is 9 m above it. The salt is exceptionally pure containing less than 2 per cent impurities. The salt beds occur in the Salina Formation of Silurian age.
The salt bed was discovered by Canadian Rock Salt Company as a result of diamond drilling carried out in 1952. A production shaft was sunk to a depth of 335 m. The mine workings extend beneath the Detroit River. Due to water conditions (aquifers) and hydrogen sulphide gas, the ground had to be frozen to a depth of 229 m by a series of freeze-holes drilled 1 m along the circumference of a circle 9.7 m in diameter prior to shaft sinking. Production began in 1955.
2 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
382.7 - 393.3 Ma
|Detroit River Group; Onondaga Formation|
Age: Middle Devonian (382.7 - 393.3 Ma)
Stratigraphic Name: Detroit River Group; Onondaga Formation
Reference: Ontario Geological Survey. 1:250 000 scale bedrock geology of Ontario. ISBN 978-1-4435-5705-4. Miscellaneous Release–Data 126 - Revision 1.