Hildreths Formation of Seboomook Group (ME*)
Early Devonian*
Hildreths Mill, 1.1 km west of high area along Wilton-Weld Road (ME Highway 156), southern Franklin Co., west-central Maine (Osberg and others, 1968).
New England 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 ([ ]).