. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography (HO)SUBAERIAL GRAVEL Qjjj MAINLAND MARSH (H2) TIDAL CREEK LAG GRAVEL (H3)LAGOONAL SANDY MUD (H4) MARSH, PEAT, WASHOVER SAND (H5)lNLET SAND (H6) DUNE, WASHOVER SAND (H8) BASAL SHELF GRAVEL (H9) SHELF SAND (ni^) SHELF MUD (Pj) PLEISTOCENE LAGOONAL SANDY MUD (P2) PLEISTOCENE BARRIER SAND (P3) PLEISTOCENE INNER SHELF MUD (H7) BEACH, SHOREFACE SAND FIGURE 10. Stratigrapbic model for a low coast undergoing erosional shoreface retreat, Pleistocene sands, w
. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography (HO)SUBAERIAL GRAVEL Qjjj MAINLAND MARSH (H2) TIDAL CREEK LAG GRAVEL (H3)LAGOONAL SANDY MUD (H4) MARSH, PEAT, WASHOVER SAND (H5)lNLET SAND (H6) DUNE, WASHOVER SAND (H8) BASAL SHELF GRAVEL (H9) SHELF SAND (ni^) SHELF MUD (Pj) PLEISTOCENE LAGOONAL SANDY MUD (P2) PLEISTOCENE BARRIER SAND (P3) PLEISTOCENE INNER SHELF MUD (H7) BEACH, SHOREFACE SAND FIGURE 10. Stratigrapbic model for a low coast undergoing erosional shoreface retreat, Pleistocene sands, whose erosion provides material for the surficial sand sheet. The basal layer of the surficial sand sheet is a thin. discontinuous gravel (Powers and Kinsman, 1953; Belderson and Stride, 1966; Yeenstra, 1969; Xorris, 1972) or shell hash rich in backbarrier and beach species (Fischer, 1961; Merrill et al., 1965; Milliman and Emery, 1968; Field, 1974). More exotic clasts are clay pebbles eroded from Early Holocene lagoonal deposits, elephant teeth (Whitmore et al., 1967), and concretions from Tertiary strata (Stanley et al., 1967). The basal gravel is rarely more than a meter thick. It is SUCCESSIVE POSITIONS OF SHORE EACE DURING INTERMITTENT TRANSGRESSION. TRANSGRESSION (7-11) AND BARRIER RETREAT STIUSTAND 16,7) WITH BARRIER NOURISHMENT AND UPWARD GROWTH TRANSGRESSION (1-6] AND BARRIER RETREAT LAGOON TIDAL CHANNEL BARRIER RIDGED SAND SHEET (DESTRUCTIONAll TRUNCATED BARRIER. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Atlantic Oceanographic and Meteorological Laboratories; Pacific Oceanographic Laboratories; United States. Environmental Science Services Administration. Research Laboratories; Environmental Research Laboratories (U. S. ). Washington, D. C. : U. S. Dept. of Commerce, Environmental Science Serv
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