Warrior Formation

Warrior Formation
Stratigraphic range: Cambrian
Type sedimentary
Underlies Gatesburg Formation
Overlies Pleasant Hill Formation
Thickness 250 ft at type sections,[1] 1350 ft in Nittany Arch[2]
Lithology
Primary limestone
Other shale, siltstone, sandstone
Location
Region Appalachian Basin
Country United States
Extent Bedford Co., Blair Co., Centre Co., Huntingdon Co.[3]
Type section
Named for Warrior Run, Blair County
Named by C. Butts, 1918[1]

The Cambrian Warrior Formation is a mapped limestone bedrock unit in Pennsylvania.

Description

The Warrior Formation is described by Berg and others as gray, thin- to medium-bedded, fossiliferous, cyclic limestone bearing stromatolites, interbedded with shale, siltstone, and sandstone.[4]

Fossils

Notable Exposures

Age

Relative age dating places the Warrior Formation in the middle to late Cambrian.

References

  1. 1.0 1.1 1.2 1.3 Butts, Charles, 1918, Geologic section of Blair and Huntingdon Counties, central Pennsylvania: American Journal of Science, 4th series, v. 46, p. 523-537.
  2. Wilson, J.L., 1952, Upper Cambrian stratigraphy in the central Appalachians: Geological Society of America Bulletin, v. 63, no. 3, p. 275-322.
  3. USGS Mineral Resources On-Line Spatial Data, retrieved 4 Mar. 2011
  4. 4.0 4.1 Berg, T.M. (compiler), 1980, Geologic map of Pennsylvania: Pennsylvania Geological Survey State Map, 4th series, 1, 1 sheet, scale 1:250,000
  5. 5.0 5.1 5.2 Tasch, Paul, 1951, Fauna and Paleoecology of the Upper Cambrian Warrior Formation of Central Pennsylvania, Journal of Paleontology, Vol. 25, No. 3, pp. 275-306, pls. 44-47, May 1951 abstract