Mount Simon Sandstone

Mount Simon Sandstone
Stratigraphic range: Upper Cambrian
TypeGeological formation
Unit ofPotsdam Sandstone
UnderliesEau Claire Formation and Rome Formation
OverliesHinckley Sandstone and Middle Run Formation
Thicknessup to 2,000 feet (610 m)
Lithology
PrimaryCoarse sandstones
OtherOccasional fine dark grey or maroon shales
Location
ExtentIllinois, Indiana, Kentucky, Michigan, Minnesota, Ohio, and Wisconsin,
Type section
Named forMount Simon escarpment in Eau Claire County, Wisconsin[1]
Named byE. O. Ulrich
Thickness at type section235 feet

The Mount Simon Sandstone is an Upper Cambrian sandstone and is found in many states in the Midwest such as Wisconsin, Minnesota, Iowa, Illinois, Iowa, and Missouri.

The Mount Simon formation is the equivalent of the La Motte Sandstone formation in the St. Francois Mountains of Missouri.[1] It was deposited in a nearshore environment, unconformably overlying Precambrian basement, and underlying the Eau Claire Formation in Wisconsin.[2]

The Mount Simon sandstone is named after an escarpment of sandstone in Eau Claire, Wisconsin, called Mount Simon by E.O. Ulrich.[1]

  1. ^ a b c "Mount Simon Sandstone". Indiana Geological & Water Survey. Retrieved 2024-04-08.
  2. ^ Hamblin, A. P. (2011). Detailed outcrop and core measured sections of Upper Cambrian and Middle Ordovician sandstones (and associated facies), southwestern Ontario (Report). Geological Survey of Canada. doi:10.4095/288671. Open File 6856.