Usage:
Slade Formation (KY*,TN,VA,WV)
Subunits:
lower part: Renfro, Ste. Genevieve, Warix Run, and Mill Knob Members (KY*); upper part: Cave Branch Bed, and Armstrong Hill, Holly Fork, Rosslyn, Tygarts Creek, Ramey Creek, Maddox Branch, and Poppin Rock Members (KY*); informal Mount Vernon member (KY).
Geologic age:
Middle Mississippian (Visean; late Osagean to early Chesterian)*
Type section, locality, area and/or origin of name:
Type section: southwestern highwall of Natural Bridge Stone Co. quarry, near the Mountain Parkway, about 6.5 km northwest of Slade, Powell Co., KY (Ettensohn and others, 1984).
AAPG geologic province:
Appalachian basin*
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 ([ ]).