Jacobsville aquifer
Detailed Description
The Jacobsville aquifer consists of the Jacobsville Sandstone, which is a feldspathic to quartzitic sandstone and shale that is present along the Southern shore of Lake Superior and on the Keewanaw Peninsula of the Upper Peninsula of Michigan. The Jacobsville Sandstone is Precambrian in age, and it overlies crystalline rocks that also are of Precambrian age.
Sources/Usage
Public Domain.