Submergence Effects on a Rhode Island Barrier and Lagoon and Inferences on Migration of Barriers

摘要: The Charlestown-Green Hill barrier beach-lagoon complex lies along Rhode Island's south shore. Barrier beach and tidal delta sands, lagoonal fine sediments, lag deposits have been deposited on a base of glacial till, outwash, glaciofluvial sand. sediments derived mainly from reworking sediments. Tidal currents built sand at the inshore end an inlet, but beach's side has introduced over barrier. Fine are in deeper areas lagoon. was formed lower sea level, moved landward as transgressed, with deposition migrating small size this places its shallow depth, resulting erosion entire seaward by storm waves also permitting considerable transport across to lagoon side. remained because lack supply. Thus sup...