Johns Valley Formation

Last updated
Johns Valley Formation
Stratigraphic range: Carboniferous: Pennsylvanian
Type Formation
Underlies Atoka Formation
Overlies Jackfork Sandstone
Lithology
Primary Shale
Other Sandstone
Location
Region Arkansas and Oklahoma
Country United States
Type section
Named forJohns Valley, Pushmataha County, Oklahoma [1]
Named by Edward Oscar Ulrich, 1927

The Johns Valley Formation is a geologic formation in Arkansas and Oklahoma. [2] It preserves fossils dating back to the Carboniferous period.

Contents

Paleofauna

Bryozoans

Cephalopods

See also

References

  1. Ulrich, E.O. (1927). "Fossiliferous boulders in the Ouachita "Caney" shale and the age of the shale containing them". Oklahoma Geological Survey Bulletin. 45: 6, 21–23, 30, 36–37.
  2. "Stratigraphic Summary of the Arkansas River Valley and Ouachita Mountains". Arkansas Geological Survey. Archived from the original on 2018-05-29. Retrieved 2017-12-15.
  3. 1 2 3 4 5 6 7 8 9 10 11 Horowitz, Alan S. (1977). "Late Mississippian and Early Pennsylvanian bryozoan faunas of Arkansas and Oklahoma: a review" (PDF). Oklahoma Geological Survey Guidebook. 18: 101–105. Retrieved 3 February 2018.
  4. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Gordon, Jr., Mackenzie (1964). "Carboniferous Cephalopods of Arkansas". U.S. Geological Survey Professional Paper. 460: 51–53.