 Mexico. This study is based on a comprehensive survey of the literature, maps, and marine charts, which were correlated with field observations. To obtain a perspective, only gross forms and processes of barrier development were considered. Evidence indicates that Santa Rosa Island, Mississippi Sound, and Bolivar Peninsula barriers developed downdrift of sediment-supplying coasts of Quaternary age. These barriers evolved with the Recent rise of sea level to its present stand. Apalachicola barriers formed on the flanks of the Pleistocene deltaic plain. Coasts such as the stretch between Destin and Panama City, Florida, and the zero-energy coast of Florida do not have barrier islands. In these cases the modern shoreline is abutted against Pleistocene deposits which are the local source of sediments. (Author)
Descriptors : (*COASTAL REGIONS, MEXICO GULF), (*ISLANDS, SEDIMENTATION), SOURCES, TRANSPORT PROPERTIES, SAND, DEPOSITS, ESTUARIES, GEOLOGIC AGE DETERMINATION, DELTAS, OCEAN WAVES, TIDES, FLORIDA
Subject Categories : Physical and Dynamic Oceanography
Distribution Statement : APPROVED FOR PUBLIC RELEASE