. The Earth beneath the sea : History. Ocean bottom; Marine geophysics. HiLIMEDi DEBRIS â ^^:" \ t f ^â re-f-'. :; ;â-^ ^ ^^^;$ ^ A. Fig. 10. Grain size and constituent comiDosition, Bikini Atoll. (After Emerj-, Tracey and Ladd, 1954.) quantity of Halimeda in the sediments around Johnston Island, a shallow, flat-topped platform without a windward barrier reef. D. Florida Reef Tract The Florida reef tract includes a protected area behind the outer reefs that is in many respects analogous to the atoll lagoons of the Pacific. It is much shallower, as seen in Figs. 6 and 11, and less r
. The Earth beneath the sea : History. Ocean bottom; Marine geophysics. HiLIMEDi DEBRIS â ^^:" \ t f ^â re-f-'. :; ;â-^ ^ ^^^;$ ^ A. Fig. 10. Grain size and constituent comiDosition, Bikini Atoll. (After Emerj-, Tracey and Ladd, 1954.) quantity of Halimeda in the sediments around Johnston Island, a shallow, flat-topped platform without a windward barrier reef. D. Florida Reef Tract The Florida reef tract includes a protected area behind the outer reefs that is in many respects analogous to the atoll lagoons of the Pacific. It is much shallower, as seen in Figs. 6 and 11, and less removed from connection with the adjacent deeper water, but it does appear to have a similar physical environ- ment. The sediments of the Florida back reef, like those of the atoll lagoons, are dominated by Hali7neda (Fig. 11). The thin reef sands, on the other hand, are characterized by the presence of fragments of coral and coralline algae, the reef builders, and the fore-reef sediments by coralline algae and Foraminifera. These associations of particles coincide with the distributions of the zones of maximum abundance of their parent organisms. It should be noted that the composition of the reef sands is biased in favor of the fragile sediment-producing organisms because most of the reef builders, massive corals and encrusting algae, remain as cemented reef 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 Hill, M. N. (Maurice Neville), 1919-. New York : Interscience Pub.
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Keywords: ., bookcentury1900, bookcollectionbiodivers, booksubjectoceanbottom
