Geologic units in Kings county, New York

Raritan Formation (Upper Cretaceous) at surface, covers 37 % of this area

Clay, silty clay, sand, gravel.

Monmouth Group, Matawan Group and Magothy Formation (Upper Cretaceous) at surface, covers 37 % of this area

Silty clay, glauconitic sandy clay, sand, gravel.

Glacial and Alluvial Deposits (Quaternary) at surface, covers 26 % of this area

Underlying bedrock geology unknown.