Usage:
Pinnacle Formation (VT*)
Geologic age:
Neoproterozoic and Cambrian*
Type section, locality, area and/or origin of name: (See Canadian Lexicon)
Type locality: in Lot 1, Range 1, Dunham Twp., Sutton quadrangle, Quebec, Canada, on north side of road and on western limb of same syncline that caps Pinnacle Mountain and Spruce Hill. Named from Pinnacle Mountain which has capping of graywacke (Clark, 1931).
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 ([ ]).