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Laguna Playa Grande (left) sits behind a vegetation-covered barrier beach that is as much as 260 feet (80 meters) wide and 7 to 10 feet (2 to 3 meters) high. Laguna Playa Grande (left) sits behind a vegetation-covered barrier beach that is as much as 260 feet (80 meters) wide and 7 to 10 feet (2 to 3 meters) high. Surges from intense storms carry sand from the ocean beach over the dunes and into the lagoon. Such "over-topping" events leave distinctive layers of coarse-grained sands and bits of shell interspersed between the organic-rich silt usually found in lagoon sediments.[back]
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