Newark Basin Lexicon
 
 
 

Pennsylvania
 
  Lyman (1895) Penn Bascom et al (1909) Penn Lyttle & Epstein (1987) Penn Weems & Olsen (1997) Penn/NJ/NY
Early Jurassic Pottstown Shales Brunswick Shale Brunswick Group Upper part Meriden Group Feltville Formation
Jacksonwald Basalt Orange Mountain Basalt
Lower part Chatham Group Passaic Formation
Late Triassic
Perkasie Shales
Lansdale Shales
Gwynedd Shales Lockatong Formation Lockatong Formation Lockatong Formation
Norristown Shales Stockton Formation Stockton Formation Stockton Formation

 
 

New York - New Jersey
 
 
Kummel (1897) NJ
Darton et al. (1908), Bayley et al. (1914) NY-NJ
Olsen 1980 (NY-NJ)
Lyttle & Epstein (1987) NY-NJ
Weems & Olsen (1997) NY-NJ
Early Jurassic
Brunswick Shale
Brunswick Formation
Boonton Formation
Brunswick Group
Boonton Formation
Agawam Group
Boonton Formation
Third Watchung Basalt
Hook Mountain Basalt
Hook Mountain Basalt
Meriden Group
Hook Mountain Basalt
Brunswick Formation
Towaco Formation
Towaco Formation
Towaco Formation
Second Watchung Basalt
Preakness Basalt
Preakness Basalt
Preakness Basalt
Brunswick Formation
Feltville Formation
Feltville Formation
Feltville Formation
First Watchung Basalt
Orange Mountain Basalt
Orange Mountain Basalt
Orange Mountain Basalt
Brunswick Formation
Passaic Formation Passaic Formation Chatham Group
Passaic Formation
Late Triassic
Lockatong Formation
Lockatong Formation
Lockatong Formation Lockatong Formation
Lockatong Formation
Stockton Formation
Stockton Formation
Stockton Formation Stockton Formation
Stockton Formation

Note: The Triassic-Jurassic boundary lies within the uppermost part of the Passaic Formation.





Modified from:

Luttrell, G.W.  1989. Stratigraphic Nomenclature of the Newark Supergroup of Eastern North America. U.S. Geological Survey Bulletin 1572.

Weems, R.E. and Olsen, P.E. 1997. Synthesis and revision of groups within the Newark Supergroup, eastern North America. GSA Bulletin, v. 109, no. 2, p. 195-209.
 
 
 

Additional References:

Bascom, F., Clark, W.B., Darton, N.H., Kummel, H.B., and others. 1909. Philadelphia folio, Pennsylvania, New Jersey, Delaware. U.S. Geological Survey Geologic Atlas of the United States, no. 162, 10 maps, 23 p.

Bayley, W.S., Salisbury, R.D., and Kummel, H.B. 1914. Raritan folio, New Jersey. U.S. Geological Survey Geologic Atlas of the United States, no. 191, 5 maps, 32 p.

Darton, N.H., Bayley, W.S., Salisbury, R.D. and Kummel, H.B. 1908. Passaic folio, New Jersey-New York. U.S. Geological Survey Geologic Atlas of the United States, no. 157, 4 maps, 27 p.

Kummel , H.B. 1897. The Newark System - Report of progress. New Jersey Geological Survey Annual Report of the State Geologist for the year 1896, pp. 25-88.

Lyman, B.S. 1895. New Red of Bucks and Montgomery Counties. In A summary description of the geology of Pennsylvania. Pennsylvania Geological Survey v.3, pt. 2, pp. 2589-2638.

Lyttle, P.T. and Epstein, J.B. 1987. Geologic map of the Newark 1 by 2 quadrangle, New Jersey, Pennsylvania, and New York. U.S. Geological Survey Miscellaneous Investigations Map I-1715, scale 1:250,000.

Olsen, P.E. 1980. The latest Triassic and Early Jurassic formations of the Newark basin (eastern North America, Newark Supergroup): stratigraphy, structure and correlation. New Jersey Academy of Science Bulletin, v. 25, pp. 25-51.
 

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