Usage:
Mashipacong Member of Rondout Formation (NJ*,NY*,PA*)
Geologic age:
Early Devonian*
Type section, locality, area and/or origin of name:
Type section: in the abandoned William Nearpass quarry, 1.8 mi southwest of Duttonville, in northwest quarter of Port Jervis South 7.5-min quadrangle [approx. Lat. 41 deg. 20.1 min. N., Long. 74 deg. 42.3 min. W., Sussex Co., NJ (A.G. Harris, written commun., ca. 1995)]. Named for its proximity to Mashipacong Island in the Delaware River, Sussex Co., NJ, 1.7 mi west-northwest of quarry (Epstein and others, 1967).
AAPG geologic province:
Appalachian 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 ([ ]).