Ludlow Formation

Ludlow Formation
Stratigraphic range: Paleogene
Jarosite concretions from the Ludlow Formation (South Dakota)
TypeFormation
Unit of(partially) Fort Union Formation
UnderliesCannonball Formation and Slope Formation
OverliesHell Creek Formation
Location
RegionNorth Dakota, South Dakota
CountryUnited States

The Ludlow Formation is a geologic formation in western North Dakota. It preserves fossils dating back to the Paleogene Period.

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