Beach Foreshore Beds
The beach foreshore is the wave washed, seaward sloping beach front. It occupies the intertidal zone, but extends up to the highest level reached by the waves. It is a feature which shifts and changes form in response to sea conditions. For example, as the wave heights increase during storms, the foreshore encroaches, landward, at the expense of the back-beach.
Foreshore beach bedding comprises groups of near-parallel beds, with some low angle cross-bedding, which dip towards the sea. The characteristics of these deposits - The nature of the sand and the type of bedding, can be mistaken for those of windward dune beds.
A beach foreshore limestone, when identified in the geological
record, can provide a good estimate of height of a previous sea level because
of the restricted elevation range, about sea level, in which it formed.