Usage:
No current usage.
(†Watchung Basalt of Newark Supergroup (NJ,NY) replaced with Orange Mountain Basalt, Preakness Basalt, and Hook Mountain Basalt. See Orange Mountain, Preakness, and Hook Mountain.)
Geologic age:
Jurassic, Early
Type section, locality, area and/or origin of name:
Type area: Watchung Mountains, two prominent ridges in the Newark area, Somerset, Union, Essex, Passaic, and Bergen Cos., NJ, and Orange Co., NY (Darton, 1889).
AAPG geologic province:
Piedmont-Blue Ridge province
Newark 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 ([ ]).