Atoka Formation

Atoka Formation
Stratigraphic range: Pennsylvanian
TypeGeologic formation
UnderliesHartshorne Sandstone
OverliesBloyd Formation, Johns Valley Formation
Lithology
PrimarySandstone
OtherShale
Location
RegionArkansas, Oklahoma
CountryUnited States
Type section
Named byJ.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]

  1. ^ 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.
  2. ^ a b "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.