Geologic units in Richmond county, New York

Additional scientific data in this geographic area

Raritan Formation (Upper Cretaceous) at surface, covers 56 % of this area

Clay, silty clay, sand, gravel.

Serpentinite (Lower Ordovician) at surface, covers 27 % of this area

Serpentinite.

Palisade Diabase (Early Jurassic) at surface, covers 11 % of this area

Palisade Diabase

Stockton Formation (Upper Triassic) at surface, covers 6 % of this area

Arkose, conglomerate, and mudstone.