Cason Shale

Cason Shale
Stratigraphic range: Ordovician-Silurian
TypeFormation
Unit ofnone
UnderliesBrassfield Limestone
OverliesFernvale Limestone
Thicknessup to appx. 23 feet[1]
Lithology
PrimaryShale
Location
RegionArkansas
CountryUnited States
Type section
Named forCason tract and mine, near Batesville, Independence County, Arkansas
Named byHenry Shaler Williams[2]

The Cason Shale is a Late Ordovician to Middle Silurian geologic formation in the Ozark Plateaus of Arkansas.[1] The name was introduced in 1894 by Henry Shaler Williams in his study of Arkansas.[2] Williams designated a type locality at what was known as the Cason tract and mine, near Batesville, Independence County, Arkansas, however, he did not assign a stratotype. As of 2017, a reference section has not been designated for this unit.

  1. ^ a b McFarland, John David (2004) [1998]. "Stratigraphic summary of Arkansas" (PDF). Arkansas Geological Commission Information Circular. 36: 7. Archived from the original (PDF) on 2016-12-21. Retrieved 2018-01-11.
  2. ^ a b Williams, Henry S. (1894). "On the age of the manganese beds of the Batesville region of Arkansas". The American Journal of Science. 3rd Series. 48: 325–331.