Roca Formation (United States)

The Roca Formation (or Roca Shale) is an early Permian geologic formation (Wolfcampian) with its exposure running north and south through Kansas and extending into Nebraska and Oklahoma, notably comprising varicolored black, brown, gray, green, red, and blue shales, mudstones, and limestone, some of which representing Permian paleosols.^[1][2]

Roca Formation
Stratigraphic range: early Permian
Multicolored Roca Shale, well-exposed along Seth Child Road in Manhattan, Kansas, marked by the Howe limestone below and the Sallyards limestone and Legion shale above.
Type	Formation
Lithology
Primary	Shale and mudstone
Other	Limestone
Location
Region	Midcontinent (Nebraska, Kansas, Oklahoma)[1]
Country	United States
Type section
Named for	Roca, Nebraska[1]

See also

• Earth sciences portal
• Kansas portal
• Paleontology portal

• List of fossiliferous stratigraphic units in Kansas
• List of fossiliferous stratigraphic units in Nebraska
• List of fossiliferous stratigraphic units in Oklahoma
• Paleontology in Kansas
• Paleontology in Nebraska
• Paleontology in Oklahoma