Usage:
Lewis sandstone member (informal) of Pride Mountain Formation (AL,MS)
Lewis cycle (informal) in Pride Mountain Formation (AL)
Informal. The rank or lithologic term should not be capitalized.
Geologic age:
Middle Mississippian (Visean; early Chesterian)
Type section, locality, area and/or origin of name:
Not designated. Occurs in the subsurface of northeastern MS and northwestern AL.
AAPG geologic province:
Black Warrior 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 ([ ]).