St. Joe Formation

The St. Joe Formation or St. Joe Limestone Member is a geologic formation or member in northern Arkansas, southern Missouri and northeastern Oklahoma.[1] It preserves fossils of the Mississippian subperiod including crinoids, brachiopods, bryozoa, conodonts, blastoids, ostracods and rugose coral.[1]

St. Joe Limestone Member
Stratigraphic range: Mississippian
TypeMember
Unit ofBoone Formation
OverliesChattanooga Shale
Thicknessup to 100 ft.[1]
Lithology
PrimaryLimestone
OtherChert
Location
RegionArkansas, Missouri, Oklahoma
CountryUnited States
Type section
Named forSt. Joe, Searcy County, Arkansas
Named byT.C. Hopkins[2]

See also

References

  1. St. Joe Limestone
  2. Hopkins, T.C. (1893). "Marbles and other limestones". Annual Report of the Geological Survey of Arkansas for 1890. 4: 10, 91, 150, 209–211, 244, 249, 253–349, 383, pl. 3.


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