Usage:
No current usage.
(†Bon Air Sandstone of Lee Group (TN*) or †Bon Air Sandstone (GA) abandoned. Replaced with Sewanee Conglomerate. See Sewanee.)
Originally misspelled Bonair.
Geologic age:
Early Pennsylvanian (Bashkirian; Westphalian; Morrowan)
Type section, locality, area and/or origin of name:
Named from Bonair [Bon Air, see Pikeville quadrangle, 1892 ed., scale 1:125,000], White Co., central TN (US geologic names lexicons, USGS Bull. 896, 1200).
AAPG geologic province:
Appalachian basin
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 ([ ]).