Roca Formation (United States)

Last updated
Roca Formation
Stratigraphic range: early Permian
Roca Shale road cut on Seth Child KS-113, Manhattan, Kansas.jpg
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
RegionMidcontinent (Nebraska, Kansas, Oklahoma) [1]
Country United States
Type section
Named for Roca, Nebraska [1]

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]

See also

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References

  1. 1 2 3 Jewett, John M. (1941). The Geology of Riley and Geary Counties, Kansas, Kansas Geological Survey Bulletin 39. University of Kansas Publications, State Geological Survey of Kansas. [ Roca, Nebraska is in Lancaster County, Nebraska ]
  2. "Geologic Unit: Roca". National Geologic Database. Geolex — Unit Summary. United States Geological Survey. Retrieved 2019-06-02.