. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. Fig. 6. Distribution of sedimentary facies of Yongxing table reef. 1- The autochthonous reef facies; 2~ The marginal boundstone faciesI 3-5 The reef flat facies; 6-8 The sand cay facies! 9- Boundary line of facies; 10- Isobath; 11- Reef margin! 12- Coast line! 13- Cross section. The sand cay (barrier) gravel-sand facies (6). In the Xisha area, sand cays are built up on southwest areas of the reef flats, in response to the dominant influence of the northeast monsoon winds. Lengths and widths of cays generally r
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. Fig. 6. Distribution of sedimentary facies of Yongxing table reef. 1- The autochthonous reef facies; 2~ The marginal boundstone faciesI 3-5 The reef flat facies; 6-8 The sand cay facies! 9- Boundary line of facies; 10- Isobath; 11- Reef margin! 12- Coast line! 13- Cross section. The sand cay (barrier) gravel-sand facies (6). In the Xisha area, sand cays are built up on southwest areas of the reef flats, in response to the dominant influence of the northeast monsoon winds. Lengths and widths of cays generally range from 20 to 200 m and the longest reaches over 1900 m. In fringing reef areas off Hainan Island the sand cays develop into sand barriers or coastal sand dams. Sand cays occur in high energy environments with sand and gravel beaches on their seaward slopes. In the supratidal zone there are 1-4 rows of barriers or dams and dunes. These storm ridges have a relief of 1-2 m and are covered with 5~6 m of vegetation () . The central cay areas consist of sand-gravel flats, depressions and lagoons. 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 Smithsonian Institution. Press; National Research Council (U. S. ). Pacific Science Board; Smithsonian Institution; National Museum of Natural History (U. S. ); United States. Bureau of Sport Fisheries and Wildlife. Washington, D. C. : [Smithsonian Press]
Size: 1888px × 1323px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauth, bookauthorsmithsonianinstitutionpress, bookcentury1900
