Warrior Formation
{{Infobox rockunit
| name = Warrior Formation
| image = File:Warrior limestone butc1162.jpg
| caption = Outcrop showing cryptozoa layers at Bakers Summit, Bedford County
| type = sedimentary
| age = Cambrian
| period = Cambrian
| prilithology = limestone
| otherlithology = shale, siltstone, sandstone
| namedfor = Warrior Run, Blair County
| namedby = C. Butts, 1918Butts, Charles, 1918, Geologic section of Blair and Huntingdon Counties, central Pennsylvania: American Journal of Science, 4th series, v. 46, p. 523-537.
| region = Appalachian Basin
| country = United States
| coordinates =
| unitof =
| subunits =
| underlies = Gatesburg Formation
| overlies = Pleasant Hill Formation
| thickness = 250 ft at type sections, 1350 ft in Nittany Arch,Wilson, J.L., 1952, Upper Cambrian stratigraphy in the central Appalachians: Geological Society of America Bulletin, v. 63, no. 3, p. 275-322. 746 ft at Waddle.
| extent = Bedford Co., Blair Co., Centre Co., Huntingdon Co.[https://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=PACAw%3B15 USGS Mineral Resources On-Line Spatial Data], retrieved 4 Mar. 2011
| area =
| map =
| map_caption =
}}
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.Berg, T.M. (compiler), 1980, Geologic map of Pennsylvania: Pennsylvania Geological Survey State Map, 4th series, 1, 1 sheet, scale 1:250,000 [https://web.archive.org/web/20140524011640/http://www.dcnr.state.pa.us/topogeo/publications/pgspub/map/map1/index.htm]
=Fossils=
File:Cryptozoon undulatum Bassler Butts 1945.jpg]]
- Trilobites, including Crepicephalus, Cedaria, Llanoaspidella, and Blountia kindlei Resser, Coosella brevis Resser, Kingstonia ara (Walcott), K. kindlei Resser, and other Kingstonia species, Menomonia avitas (Walcott), Blountia, Modocia, Lonchocephalus, Genevievella, Pemphigaspis.Charles Butts, 1945. [https://pubs.er.usgs.gov/publication/gf227 Hollidaysburg-Huntingdon folio], Pennsylvania, Folios of the Geologic Atlas 227. United States Geological Survey.
- Brachiopods
- Cryptozoon, a type of trace fossil
- Stromatolites
=Notable Exposures=
- Type section: Warrior Creek (formerly Warriorsmark Creek),Huntingdon County
- Section near Waddle, Pennsylvania.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 [https://www.jstor.org/pss/1299923 abstract]
Age
Relative age dating places the Warrior Formation in the middle to late Cambrian.
References
{{reflist}}
Category:Cambrian geology of Pennsylvania
Category:Limestone formations of the United States
Category:Cambrian southern paleotemperate deposits
Category:Shale formations of the United States
Category:Siltstone formations of the United States
Category:Sandstone formations of the United States
{{Pennsylvania-geologic-formation-stub}}