Atoka Formation
Atoka Formation | |
---|---|
Stratigraphic range: Pennsylvanian | |
Type | Geologic formation |
Underlies | Hartshorne Sandstone |
Overlies | Bloyd Formation, Johns Valley Formation |
Lithology | |
Primary | Sandstone |
Other | Shale |
Location | |
Region | Arkansas, Oklahoma |
Country | United States |
Type section | |
Named by | J.A. Taff[1] |
Named after Atoka County, Oklahoma, the Atoka Formation is a geologic formation in central and western Arkansas, eastern Oklahoma, central and western Texas, and eastern New Mexico.[2] It is the surface rock of the Boston Mountains and dominates exposures in the Frontal Ouachita Mountains of the Arkansas River Valley.[2]
Sedimentology
The Atoka Formation is a sequence of marine sandstones, siltstones, and shales, and may be as thick at 25,000 feet in the Ouachita Mountains.[2] The formation is conformable with the Bloyd Shale in the Boston Mountains and the Johns Valley Formation in the Ouachita Mountains.[2]
Paleofauna
Conodonts
- C. lauta[3]
- C. sinuata[4]
- G. wapanuckensis[5]
- G. bella[6]
- Hindeodella[7]
- Ligonodina
- L. lexingtonensis[8]
- O. recta[9]
- P. attenuata[10]
- P. ouachitensis[11]
- S. cancellosus[12]
- S. gracilis[13]
Foraminifera
- F. devexa[14]
- F. oliviformis[15]
- F. prolifica[16]
- Hyperammina
- H. bulbosa[17]
- Involutina
- I. semicronstrictus[18]
- Pesudostaffella
- P. atokensis[19]
- Profusulinella
- P. fittsi[20]
- P. millcreekensis[21]
- Reophax
- R. fittsi[22]
- R. tumidulus[23]
- Thurramminoides
- T. sphaeroidalis[24]
Trace Fossils
- C. arkansanus[25]
References
- ^ Taff, J.A.; Adams, G.I. (1900). "Geology of the eastern Choctaw coal field". Twenty-First Annual Report of the United States Geological Survey, 1899-1900, Part 2, General Geology, Economic Geology, Alaska: 272, 273–274.
- ^ a b c d "Stratigraphic Summary of the Arkansas River Valley and Ouachita Mountains". Arkansas Geological Survey. Archived from the original on 2018-05-29. Retrieved 2017-11-23.
- ^ Johansson, F. C. Jr. (1960). Micropaleontology of the Wesley Johns Valley and Atoka Formations of the Ouachita Mountains of Oklahoma (PhD. dissertation). University of Wisconsin. p. 45.
- ^ Johansson, F. C. Jr. (1960). Micropaleontology of the Wesley Johns Valley and Atoka Formations of the Ouachita Mountains of Oklahoma (PhD. dissertation). University of Wisconsin. p. 45.
- ^ Johansson, F. C. Jr. (1960). Micropaleontology of the Wesley Johns Valley and Atoka Formations of the Ouachita Mountains of Oklahoma (PhD. dissertation). University of Wisconsin. p. 45.
- ^ Johansson, F. C. Jr. (1960). Micropaleontology of the Wesley Johns Valley and Atoka Formations of the Ouachita Mountains of Oklahoma (PhD. dissertation). University of Wisconsin. p. 45.
- ^ Johansson, F. C. Jr. (1960). Micropaleontology of the Wesley Johns Valley and Atoka Formations of the Ouachita Mountains of Oklahoma (PhD. dissertation). University of Wisconsin. p. 45.
- ^ Johansson, F. C. Jr. (1960). Micropaleontology of the Wesley Johns Valley and Atoka Formations of the Ouachita Mountains of Oklahoma (PhD. dissertation). University of Wisconsin. p. 45.
- ^ Johansson, F. C. Jr. (1960). Micropaleontology of the Wesley Johns Valley and Atoka Formations of the Ouachita Mountains of Oklahoma (PhD. dissertation). University of Wisconsin. p. 45.
- ^ Johansson, F. C. Jr. (1960). Micropaleontology of the Wesley Johns Valley and Atoka Formations of the Ouachita Mountains of Oklahoma (PhD. dissertation). University of Wisconsin. p. 45.
- ^ Johansson, F. C. Jr. (1960). Micropaleontology of the Wesley Johns Valley and Atoka Formations of the Ouachita Mountains of Oklahoma (PhD. dissertation). University of Wisconsin. p. 45.
- ^ Johansson, F. C. Jr. (1960). Micropaleontology of the Wesley Johns Valley and Atoka Formations of the Ouachita Mountains of Oklahoma (PhD. dissertation). University of Wisconsin. p. 45.
- ^ Johansson, F. C. Jr. (1960). Micropaleontology of the Wesley Johns Valley and Atoka Formations of the Ouachita Mountains of Oklahoma (PhD. dissertation). University of Wisconsin. p. 45.
- ^ Thompson, M.L. (1948). "Studies of American fusulinids". University of Kansas Paleontological Contributions, Protozoa. 1: 184.
- ^ Douglass, R.C.; Nestell, M.K. (1984). "Fusulinids of the Atoka Formation, lower-middle Pennsylvanian, south-central Oklahoma" (PDF). Oklahoma Geological Survey Bulletin. 136: 19–39. Retrieved 7 June 2024.
- ^ Thompson, M.L. (1935). "Fusulinids from the lower Pennsylvanian Atoka and Boggy formations of Oklahoma". Journal of Paleontology. 9: 291–306.
- ^ Johansson, F. C. Jr. (1960). Micropaleontology of the Wesley Johns Valley and Atoka Formations of the Ouachita Mountains of Oklahoma (PhD. dissertation). University of Wisconsin. p. 45.
- ^ Johansson, F. C. Jr. (1960). Micropaleontology of the Wesley Johns Valley and Atoka Formations of the Ouachita Mountains of Oklahoma (PhD. dissertation). University of Wisconsin. p. 45.
- ^ Thompson, M.L. (1935). "The fusulinid genus Staffella in America". Journal of Paleontology. 9: 111–120.
- ^ Thompson, M.L. (1935). "Fusulinids from the lower Pennsylvanian Atoka and Boggy formations of Oklahoma". Journal of Paleontology. 9: 291–306.
- ^ Douglass, R.C.; Nestell, M.K. (1984). "Fusulinids of the Atoka Formation, lower-middle Pennsylvanian, south-central Oklahoma" (PDF). Oklahoma Geological Survey Bulletin. 136: 19–39. Retrieved 7 June 2024.
- ^ Johansson, F. C. Jr. (1960). Micropaleontology of the Wesley Johns Valley and Atoka Formations of the Ouachita Mountains of Oklahoma (PhD. dissertation). University of Wisconsin. p. 45.
- ^ Johansson, F. C. Jr. (1960). Micropaleontology of the Wesley Johns Valley and Atoka Formations of the Ouachita Mountains of Oklahoma (PhD. dissertation). University of Wisconsin. p. 45.
- ^ Johansson, F. C. Jr. (1960). Micropaleontology of the Wesley Johns Valley and Atoka Formations of the Ouachita Mountains of Oklahoma (PhD. dissertation). University of Wisconsin. p. 45.
- ^ Branson, Carl C. (May 1961). "New records of the Scyphomedusan Conostichus" (PDF). Oklahoma Geology Notes. 21 (5): 130–138. Retrieved 28 January 2018.
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