Powell Formation

The Powell Formation or Powell Dolomite is a geologic formation in northern Arkansas, southeast Missouri^[3] and Virginia. It contains gastropod, cephalopod, and trilobite fossils dating back to the Ordovician Period.^[3]

Powell Formation
Stratigraphic range: Ordovician
Type	Formation
Underlies	Everton Formation
Overlies	Cotter Formation[1]
Lithology
Primary	Dolomite
Other	Shale, sandstone, chert
Location
Region	Arkansas, Missouri and Virginia
Country	United States
Type section
Named for	Powell railroad station (now abandoned), Marion County, Arkansas[2]
Named by	Edward Oscar Ulrich

See also

• Earth sciences portal
• Paleontology portal

• List of fossiliferous stratigraphic units in Arkansas
• List of fossiliferous stratigraphic units in Missouri
• List of fossiliferous stratigraphic units in Virginia