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Freda Sandstone

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Freda Sandstone
Stratigraphic range: Proterozoic
TypeFormation
UnderliesJacobsville Sandstone
OverliesNonesuch Shale
Lithology
Primarysandstone
Othermudstone, shale
Location
RegionMichigan and Wisconsin
Country United States
Freda Sandstone (Pcf, grey) on NPS Apostle Islands geological map

The Freda Sandstone is a geologic formation in Michigan. It dates back to the Proterozoic. Lithologically, the Freda Sandstone is a lithic, red-brown, cyclic sequence of sandstones, mudstones and shales (conglomerates are rare).

References

Chronostratigraphy of Michigan
Ph
Cz
Q
Pleistocene
indet.Glacial till
Mz
J
indet.
Pz
C
indet.
M
D
Upper
indet.
Frasnian
Middle
Givetian
Lower
  • Garden Island Formation
  • S
    indet.
    Llandovery
    O
    Upper
    Sandbian
    Middle
    Darriwilian
  • Bill's Creek Shale
  • Lower
  • Au Train Formation
  • Є
    Chronostratigraphy of Wisconsin
    Ph
    Pz
    D
    Upper
    Middle
    S
    O
    Upper
    Middle
    Lower
    Є
    Y
    Stenian


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