Usage:
Glencairn Formation (NM*,OK*)
[?] Glencairn Shale Member of [†?]Purgatoire Formation (CO*)
Subunits:
FORMATION STATUS: Long Canyon Sandstone Bed (CO*,NM*,OK*).
Geologic age:
late Early Cretaceous (Albian)*
Type section, locality, area and/or origin of name:
Not designated. Named from tract of land a few mi north of Lytle, in sec. 2, T. 17 S., R. 68 W., southwest corner El Paso Co., CO (Finlay, 1916).
Reference section designated in NE/4 SW/4 SW/4 sec. 18, T. 15 N., R. 2 E., Cimarron Co., OK (Kues and Lucas, 1987).
AAPG geologic province:
Las Vegas-Raton basin*
Anadarko basin*
Denver basin*
Palo Duro basin
Sierra Grande 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 ([ ]).