Dinosaur Footprints and Trackways from the Northeastern U.S.
J & H PaleoScience: Vertebrate Ichnology. Fossil foot prints and track ways from Massachusetts MA, Connecticut CT, New York NY, New Jersey NJ, Pennsylvania PA, Maryland MD




Basalt Formations:

Hook Mt Basalt - Lower Jurassic (Below the Boonton and above the Towaco Formation)
Olsen, P.E., 1980a[1] - Dark-greenish gray to black, generally fine-grained and very locally medium to coarse grained, amygdaloidal basalt composed of plagioclase, clinopyroxene, and iron-titanium oxides. Contains small spherical to tubular gas-escape vesicles, some filled by zeolite minerals or calcite, typically above flow contacts. Unit consists of at least two, and as possibly as many as three major flows. Base of lowest flow is intensely vesiculated. Tops of flows are weathered and vesiculated. Maximum thickness of unit is about 361 ft.



Preakness Basalt - Lower Jurassic (Below the Towaco and above the Feltville Formation)
Olsen, P.E., 1980a[1] - Dark-greenish gray to black, fine-grained, dense, hard basalt composed mostly of intergrown calcic plagioclase and clinopyroxene Contains small spherical to tubular gas-escape vesicles, some filled by zeolite minerals or calcite, just above scoriaceous flow contacts. Unit consists of at least three major flows, the tops of which are marked by prominent vesiculated zones up to 8 ft thick. Radiating slender columns 2 to 24 in. wide, due to shrinkage during cooling are abundant near the base of the lowest flow and well developed along Interstate Route 78. A thin 6 to 25 ft. thick bed of reddish-brown siltstone separating the first two flows has been identified elsewhere but not within this mapped area (the Roselle 7.5 minute topographic quadrangle). Maximum thickness of unit is about 1040 ft.



Orange Mt Basalt - Lower Jurassic (Below the Feltville and above the Passaic Formation)
Olsen, P.E., 1980a[1] - Dark-greenish gray to black, fine-grained, dense, hard basalt composed mostly of calcic plagioclase and clinopyroxene. Locally contains small spherical to tubular gas-escape vesicles, some filled by zeolite minerals or calcite, typically above base of flow contact. Unit consists of three major flows that are separated in places by a weathered zone, a bed of thin reddish-brown siltstone, or by volcaniclastic rock. Lower part of upper flow is locally pillowed; upper part has pahoehoe flow structures. Middles flow is massive to columnar jointed. Lower flow is gnerally massive with widely spaced curvilinear joints and is pillowed near the top. Individual flow contacts characterized by vesiculated zones up to 8 ft thick. Thickness of unit is about 415 ft.



Palisade Sill - Extruding between the Locktong Formation and above the Stockton Formation
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