Usage:
Crystal City sandstone [informal] (MO)
Called Crystal in some early reports.
(†Crystal City Sandstone abandoned by the USGS. Is same as part of St. Peter Sandstone and Roubidoux Formation. See also St. Peter and Roubidoux.)
Considered informal by the MO Geol. Survey. The rank or lithologic term should not be capitalized.
Geologic age:
Ordovician
Type section, locality, area and/or origin of name:
Named from Crystal City, Jefferson Co., eastern MO (US geologic names lexicons, USGS Bull. 896, 1200).
AAPG geologic province:
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 ([ ]).