The Womble Shale is a Middle
Ordoviciangeologic formation in the
Ouachita Mountains of
Arkansas and
Oklahoma. First described in 1892,[3] this unit was not named until 1909 by Albert Homer Purdue in his study of the Ouachita Mountains of Arkansas, where he named this unit as part of the upper Ouachita Shale and the Stringtown Shale.[4] In 1918,
U.S. Geological Survey geologist, Hugh Dinsmore Miser, replaced Purdue's nomenclature with the Womble Shale.[2] Miser assigned the town of Womble (now called
Norman) in
Montgomery County, Arkansas as the
type locality. As of 2017, a reference section for this unit has yet to be designated.
^
abcdefghijklmnopqrstuvDecker, Charles E. (1936). "Some tentative correlations on the basis of graptolites of Oklahoma and Arkansas". Bulletin of the American Association of Petroleum Geologists. 20: 301–311.