Abstract
ABSTRACT Storm sedimentation on a fringing. sandy gravel barrier system in southeast Ireland is examined. Recent wave overtopping and overwashing during severe onshore storms have resulted in a distinctive pattern of crest and backbarrier sedimentation. This is not easily matched with available models of washover sedimentation drawn from the barrier islands of the eastern United States. Beach crest overtopping occurs at heights up to +6 m MHWS and is related to the development of upper beach swash ramps that are plastered against storm-wave-eroded dune scarps located at the barrier crest. Ramp sediments comprise coarse basal beach gravels overlain by coarsening-upward units and finally topped by distinctive seawarddipping fine grit/coarse sand couplets. In places where ramps reach the dune cre t, overtopping swash has deposited a fine marine gravel veneer (
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