Usage:
No current usage.
(†Estcourt Road Formation (ME) abandoned.)
Geologic age:
Cambrian
Ordovician, Early
Type section, locality, area and/or origin of name:
Exposures along Estcourt Road, which enters the upper St. John area from Estcourt, Quebec, Rocky Brook and Beau Lake 15-min quadrangles, Aroostook Co., ME. (Boudette and others, 1976).
AAPG geologic province:
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 ([ ]).