Usage:
Hillsdale Sandstone Member of Wash Creek Slate (AL)
Geologic age:
Early(?) Cambrian
Type section, locality, area and/or origin of name:
Community of Hillsdale, in sec. 1, T. 22 S., R. 1 W., Columbiana quadrangle, Shelby Co., central AL (Guthrie, 1994).
AAPG geologic province:
Piedmont-Blue Ridge province
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 ([ ]).