Usage:
Halls Gap Member of Borden Formation (KY*)
Geologic age:
Mississippian, Early*
Type section, locality, area and/or origin of name:
Type section: exposed along U.S. Highway 27 on the north side of Halls Gap, about 4.5 miles south of Stanford, Halls Gap quadrangle, Lincoln Co., KY (Weir and others, 1966).
AAPG geologic province:
Cincinnati arch*
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 ([ ]).