Usage:
Selby Formation (NY)
Selby Limestone (NY*)
Selby Limestone of Trenton Group (NY*)
Subunits:
Millbrig K-bentonite bed (Hounsfield Metabentonite [Bed]) (NY).
Geologic age:
Late Ordovician (Mohawkian; late Turinian to Chatfieldian)*
Type section, locality, area and/or origin of name: (See Canadian Lexicon)
Type section: along Selby Creek, 1 mi north of Napanee Station, in Lot 22, Conc. III, Richmond Twp., Lennox and Addington Cos., southern Ontario, Canada (Kay, 1937).
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 ([ ]).