(1971).] Qualitative information on the foods of juvenile pink shrimp in the Buttonwood 
Canal was gathered over a year's period. Using the frequency of occurrence method of 
analysis, it was found that the pink shrimp in the Buttonwood Canal is omnivorous with 
a preference for certain foods, including crustaceans and polychaetes. Lowest feeding 
activity was reported in late winter and in summer. It was concluded that there was no 
change in diet with season or with size of shrimp examined. 
1963 
Smith, S. L. (1971) Distribution of recent foraminifera in lower Florida Bay. Memoir 1, 
Miami Geological Society. A Symposium of Recent South Florida Foraminifera. J. I. Jones 
and W. D. Bock (eds.). Miami Geological Society, Miami, FL. 116-20. 
This study was undertaken as part of a reconnaissance study of the present benthonic 
foraminifera of Florida Bay and adjacent waters. Its primary purpose was to describe 
the fauna and its distribution, and secondarily to consider ecological factors as they 
may influence observed distribution patterns. The study area consisted of the western 
portion of lower Florida Bay, a shallow carbonate shelf with water depths ranging from 
less than one foot to as much as 17 ft. Twenty six samples were collected in March 
1963. Most were obtained by coring but a few were taken using a grab sampler where 
the sediment layer was too coarse or thin to obtain a core. At each station, bottom 
temperature, water depth, and bottom community information were recorded and 
hydrographic samples were collected. 
1963 0 
Studer, H. P. (1963) Electron Microscope study of aragonite crystals in marine sediments. 
Am. Am. Assoc. Petrol. Geol. Bull. . 47(2):371. 
[ABSTRACT ONLY. DATE OF SAMPLING UNKNOWN OR NOT APPLICABLE.] The occurrence 
of aragonite needles in the carbonate mud of the surface sediments of Florida Bay, the 
Florida Keys, and the Great Bahama Bank is of interest to problems of carbonate 
deposition. Older views regarding the origin of the aragonite needles support inorganic 
precipitation. More recent theories favor a biogenic formation and link the mud 
particles to the aragonite sheath of algae, mainly Penicillus, Rhipocephalus, and 
Halimeda. Electron microscope studies of mud suspensions and of aragonite crystals 
from Penicillus reveal a remarkable similarity between the aragonite formed on the 
algal surface, and the aragonite sheath peeled from Penicillus show needle like crystals 
scattered between a network of fiber or film like algal material. The closely 
interwoven system of plant material and aragonite needles supports the suggestion of 
the algal substrate acting as a matrix for the aragonic formation. 
1963 0 
Taft, W. H. (1963) Cation influence on the recrystallization of metastable carbonates, 
aragonites and high-magnesium calcite. Geol. Soc. Am. Spec. Pap. No. 73:252. (Abs.). 
[ABSTRACT ONLY. DATE OF SAMPLING UNKNOWN OR NOT APPLICABLE.] Unconsolidated 
carbonate sediments of Florida Bay consists of more than 80% aragonite and high - 
magnesium calcite. These carbonate minerals are reported to be metastable and in time 
should recrystallize to a more stable form- presumably calcite or dolomite. However, 
Florida Bay sediments dated by 14 C techniques are as old as 3600 yrs and exhibit no 
evidence of recrystallization. Recrystallization rates of artificially prepared aragonite 
and high-magnesium calcite are controlled by concentration and particular cation in the 
surrounding liquid. Magnesium chloride solution and the magnesium in seawater appear 
to prevent recrystallization of aragonite and high-magnesium calcite at different rates. 
The Miami Oolite is used as a model to explain recrystallization of exposed Pleistocene 
metastable carbonates. Metastable marine carbonates tend to remain unstable for long 
periods until they are exposed to water deficient in magnesium. Therefore oxygen and 
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