Holocene transgression in south-central Long Island ( back barrier areas), New York.

A sequence of deposits which records the Flandrian transgression is preserved in the backbarrier areas. The vertical sequence is as follows from bottom to top: the buried Pleistocene surface, brackish- to salt-marsh peat, open-lagoonal silty clays, backbarrier sands, backbarrier-fringe salt-marsh peat, and barrier island sands. The entire transgressive sequence forms a lens-shaped deposit. In going seaward from the mainland shore to the barriers the sequence becomes thin again. In places beneath the barrier islands the transgressive sequence has been completely reworked by the lateral migration of tidal inlets. -from Authors