Usage:
Brunswick Group of Newark Supergroup (NJ*,NY*,PA*)
Brunswick Formation of Newark Group (PA)
Subunits:
GROUP STATUS (alphabetical): Boonton Formation (NJ*), Feltville Formation (NJ*), Hook Mountain Basalt (NJ*), Jacksonwald Basalt (PA), Orange Mountain Basalt (NJ,NY), Passaic Formation (NJ,NY), Preakness Basalt (NJ,NY), Towaco Formation (NJ).
FORMATION STATUS (alphabetical) --all in PA:
Graters Member, Perkasie Member.
Geologic age:
Late Triassic to Early Jurassic (late Carnian to Pliensbachian)*
Type section, locality, area and/or origin of name:
Notable exposures in Raritan River valley near New Brunswick, [Middlesex Co.], NJ (Kummel, 1897).
Composite section: along the Delaware River from Stockton north to Spring Mills, Hunterdon Co., NJ (Johnson and McLaughlin, 1957).
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 ([ ]).