No current usage.
(†Walden Sandstone (AL,GA,TN) abandoned. In TN, rocks reallocated to Rockcastle, Vandever, Newton, and Whitwell Formations of Crab Orchard Mountains Group. See Crab Orchard Mountains, Newton, Rockcastle, Vandever, and Whitwell.)
Pennsylvanian
Exposures on Walden Ridge, Chattanooga, Pikeville, and Kingston quadrangles, southeastern TN (Hayes, 1892).
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 ([ ]).