Usage:
Mount Toby Formation of Newark Supergroup (MA*)
Geologic age:
Jurassic, Early*
Sinemurian*
Pliensbachian*
Type section, locality, area and/or origin of name:
Extensively developed in the main mass of Mount Toby and exposed in the bed of Roaring Brook on the east flank of Mount Toby, Mount Toby quadrangle, Franklin Co., MA (Emerson, 1898).
AAPG geologic province:
New England province*
Deerfield basin*
Hartford 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 ([ ]).