Named the Cheesequake Formation for Cheesequake Park, Middlesex Co., NJ. In surface exposures, consists of intercalated, thin to laminated, dark-gray, micaceous weathering, light tan clay or clayey silt with abundant woody fragments and light, fine-grained micaceous sand. Unit is about 13 meters thick in outcrop. Unconformably overlies the Magothy Formation and unconformably underlies the Merchantville Formation. In the subsurface of NJ, unit consists of a thin basal, dark greenish gray, clayey, fine-grained, quartz glauconitic sand, a thick, dark gray, micaceous, very clayey silt to very fine quartz sand, and an upper thin, clayey, fine-grained, quartz sand. Thickness in the subsurface is up to 35 meters. Unconformably overlies the Magothy Formation and unconformably underlies cycle Kc1. Unit does not crop out south of the type locality, but is widespread in the subsurface in both the central and southern bedrock maps. The Cheesequake is of Late Cretaceous (late Santonian to early Campanian) age based on nannofossil and pollen biostratigraphy.

Source: GNU records (USGS DDS-6; Reston GNULEX).