Medina Group
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(Redirected from Cataract Group)
Medina Group | |
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Stratigraphic range: Silurian | |
File:Medina Group.png | |
Type | Group |
Sub-units | |
Location | |
Region | File:Flag of New York.svg New York |
Country | File:Flag of the United States.svg United States |
The Medina Group or Cataract Group is a geologic group in New York. It dates to the Silurian period. The group includes the Whirlpool Sandstone, Power Glen Shale, Devils Hole Sandstone, Grimsby Formation, Thorold Sandstone, Cambria Shale, Cabot Head Shale and Kodak Sandstone.[1]