Fragments of well-worn concretion material and bioturbated glauconitic sandstone similar to Sandy Hook sediments can be found on Breezy Point, suggesting that these materials were probably derived from the same source areas offshore Sandy Hook. These materials were probably transported shoreward onto Breezy Point during the late Pleistocene transgression. These materials managed to escape the grinding action of wave energy by remaining buried in the sediment for long periods of time. These materials were probably derived from reworked glacial till. Rock Types Illustrated Hematitic sandstone and siltstone most likely derived from the Newark Basin or Catskills region.
Specimens are orange, red, or brownish in color, and commonly display evidence of bioturbation.
Gneiss and Granite most likely derived from metamorphic and igneous terrane of the Highlands region. Long Island beaches sometimes yield beautiful pieces of anorthosite from the Adirondak region. Schist likely derived from metamorphic and igneous terrane of the Highlands region, probably from Manhattan. Schist samples commonly display garnet crystals. Quartz pebbles were ultimately derived from igneous and metamorphic terranes throughout the Appalachian region.