|Upper Cretaceous & Tertiary Formations
of New Jersey Coastal Plain
Cohansey - Cross bedded quartz sand. Coastal conditions.
Miocene / Pliocene.
Kirkwood - Light- colored massive to thick bedded
micaceous, very coarse quartz sand Inner shelf conditions.
Shark River - Glauconitic sand and quartz glauconitic
mudstone. A consolidated 1 meter layer lies at the top of the
formation. Middle shelf conditions. Eocene
Manasquan - Farmingdale member is mottled, somewhat
clayey, medium to coarse, quartz glauconitic sand. Deal
member is a thick, slightly glauconitic, clayey, fine grained
quartz sand to a clayey, sandy silt. Middle shelf conditions.
Vincentown - Massive quartz sand to a quartz limesand.
Inner shelf conditions. Paleocene.
Hornerstown - Massive bedded sand and clay that is richly
glauconitic. May contain lignite and amber. Middle to outer
shelf conditions. Cretaceous to Paleocene.
Monmouth Group - Group of formations consisting of the
Mount Laurel, Navesink, Red Bank, and Tinton formations.
For group information, see Monmouth group. Cretaceous.
Matawan Group - Group of formations consisting of the
Woodbury, Englishtown, Marshalltown, and Wenonah. For
group information, see Matawan group
Magothy - Interbedded dark micaceous silts and clays, light
colored sands and occasional sandstone beds. May contain
marcasite / pyrite concretions, lignite and amber. Continental to
coastal conditions (youngest beds are total marine).
Raritan - Light colored sands and clays. May contain
marcasite / pyrite concretions, lignite (fossil wood) and amber.
Continental conditions (except the upper most Woodbridge clay
member, which is marginal marine).
Tinton - Thick dark gray to brownish gray to reddish brown,
medium to coarse, quartz and glauconite sandstone. The only
Cretaceous formation that is consolidated in the state. Inner
Red Bank - Shrewsbury member is a cross-bedded light gray
to white to orange-pink and reddish-brown, micacous, fine to
medium feldspathic quartz sand. Sandy Hook member is a dark
gray, micacous, silty, feldspathic, clayey quartz sand. Inner to
Navesink - Thick dark greenish- grey clayey glauconitic sand.
Middle to outer shelf conditions.
Mount Laurel - Thinly bedded dark clays and light
cross-bedded sands interbedded with massively bedded sands,
massive sand beds, bioturbated pebble sand. May contain
lignite. Inner to middle shelf conditions.
Wenonah - Massive, gray, poorly sorted clayey and silty,
micaceous sand. Inner shelf conditions.
Mashalltown - Dark, silty to clayey, mottled, micacous,
quartz, glauconitic sand. May contain marcasite / pyrite
concretions, lignite and amber. Middle to outer shelf
Englishtown - Pure white to yellow, sometimes
cross-bedded quartz sand. Coastal conditions.
Woodbury - Dark, massive, micacous, somewhat clayey silt
with small amounts of siderite, glauconite, and lignite
(fossilized wood). Inner (embayment type) conditions.
Merchantville - Dark, sometimes interbedded glauconitic,
micaceous silts and clays. Inner to middle shelf conditions.
|* A solid line in between formations denotes a
A. Continental fluvial (overbank / natural levee) - Raritan, Magothy.
B. Continental fluvial (river fill / point-bar) - Raritan, Magothy, Englishtown, and Cohansey.
C. Continental fluvial ("mangrove" swamp, marginal marine) - Raritan.
D. Continental fluvial (flood basin) - Raritan, Magothy.
E. Coastal (beach) - Magothy, Englishtown, Cohansey.
F. Near-shore deltaic (marginal marine) - Magothy and Englishtown.
G. Off-shore deltaic (full marine) - Merchantville.
H. Near-shore marine - Mount Laurel, Red Bank, Vincentown, and Kirkwood.
I. Inner shelf (embayment) - Woodbury, Marshalitown
J. Inner shelf (open marine) - Merchantville, Woodbury, Englishtown, Wenonah, Red Bank, Tinton, Vincentown,
Manasquan, and Kirkwood.
K. Middle shelf (open marine) - Merchantville, Marshailtown, Wenonah, Mount Laurel, Navesink, Red Bank,
Hornerstown, Manasquan, and Shark River.
L. Outer-shelf (open marine) - Marshailtown, Navesink, Hornerstown, and Manasquan.
M. Basement rock (subsurface) - Pre-Cretaceous formations.
|Regions Of Deposition (Cross sectional View)
Of The Continental Shelf
|Regions Of Deposition (Aerial View)
Of The Continental Shelf