Usage:
No current usage.
(†Pacific Sandstone (MO) is same as St. Peter Sandstone. See St. Peter.)
Geologic age:
Early Ordovician
Type section, locality, area and/or origin of name:
Typically exposed at Pacific, Franklin Co., MO. Origin of name not stated, but probably named from Pacific (Ball and Smith, 1903).
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 ([ ]).