Usage:
Cheltenham Formation (MO*)
Cheltenham Clay (IL-local)
Geologic age:
Middle Pennsylvanian (Atokan and/or Desmoinesian)*
Type section, locality, area and/or origin of name:
Named from fire-clay seam in Cheltenham district in southern part of St. Louis Co., eastern MO (US geologic names lexicons, USGS Bull. 896, 1200).
Reference sections --all in MO (Thompson and Gentile, 2004):
(1) Fred Weber Company's Vigus north quarry, 1 mi southwest of intersection of I-70 and I-270, in center S/2 sec. 9, T. 46 N., R. 5 E., Creve Coeur 7.5-min quadrangle, St. Louis Co.;
(2) A.P. Green Refractory Company's Buecker fireclay pit, 3 mi southeast of junction MO Hwy 50 and Gasconade Co. Route K at Cave Hill, in SW/4 NW/4 sec. 30, T. 43 N., R. 5 W., Goerlisch Ridge 7.5-min quadrangle, Gasconade Co.;
(3) Chiles fireclay pit, 3 mi northeast of Fulton, and 0.3 mi on dirt road east of Calloway Co. Route Z, in NW/4 NW/4 sec. 1, T. 47 N., R. 9 W., Kingdom City 7.5-min quadrangle, Calloway Co.; and
(4) S.S. Harrison fireclay pit, 3.5 mi northeast of junction of MO Hwy 54 and I-70 at Kingdom City, and 1.25 mi north of outer road paralleling I-70, in SE/4 SW/4 sec. 1, T. 48 N., R. 9 W., Kingdom City 7.5-min quadrangle, Calloway Co.
AAPG geologic province:
Illinois basin
Ozark uplift*
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).