standardize the silver nitrate solu- 

 tion by titrating it against 10 ml. of 

 the O.ION sodium chloride solution, 

 using potassium chromate indicator. 

 Calculate the chloride equivalent per 

 ml. of silver nitrate solution from 

 this titration. 



Weigh 2.0 gms. of dried sample and 

 place in a 200-ml. Erlenmeyer flask, 

 add 100 ml. of distilled water, stopper 

 flask and shake vigorously for 10 min- 

 utes. Titrate duplicate 25-ml. aliquots 

 of the decantate with standardized 

 silver nitrate solution using potassium 

 chromate as an indicator. Multiply 

 volume of silver nitrate solution re- 

 quired by its chloride equivalent to 

 find the weight of chloride in one 

 quarter of the weighed out sample. 

 Results are recorded as percent 

 chloride on dry weight basis. 



GEOLOGICAL METHODS AND 

 PROCEDURES 



GENERAL 



Sample storage and catalogue 

 procedure 



Representative portions of the total 

 original samples were transported in 

 cardboard 1-pint ice cream cartons 

 from the Bureau of Commercial Fish- 

 eries Biological Laboratory, Bruns- 

 wick, Georgia, to the Sediment Re- 

 search Laboratory, Florida State 

 University, Tallahassee, Florida. Upon 

 arrival, approximately one -half of each 

 sample was split quantitatively with a 

 Jones Splitter and sent to other labora- 

 tories for microfaunal analysis. The 

 remaining fraction was placed in a 

 corked glass shell vial. These served 

 as the sample containers during anal- 

 ysis. After laboratory examination the 

 various samples were placed in clear 

 plastic boxes and stored in the sedi- 

 ment sample collections of the De- 

 partment of Geology, Florida State 

 University, in order of Gill sample 

 number. Powdered fractions of samples 

 are stored in glass vials in the refer- 

 ence collections and may also be ob- 



tained from the Bureau of Commercial 

 Fisheries Biological Laboratory, 

 Brunswick, Georgia. All stored sam- 

 ples have been dried at 100 C. prior 

 to storage. 



General notes on methods and 

 calculations 



Unless otherwise specified, all solu- 

 tions have been prepared with distilled 

 water and chemicals of reagent grade. 

 The determinations of organic carbon, 

 nitrogen and carbonate were made on 

 total sample. Heavy mineral deter- 

 minations were made for each size 

 fraction and then combined to give the 

 value for the total sample. 



Bioclastic components were ex- 

 amined under a binocular microscope 

 at intermediate magnification. The 

 dominant percent component was esti- 

 mated visually. In all instances the 

 dominance was great and none of the 

 samples was found to be a problem 

 in classification. 



The precision of the carbon, car- 

 bonate, and heavy mineral analyses is 

 probably at least one order of magni- 

 tude greater than the precision of 

 sampling. The very small organic con- 

 tent and the small samples available 

 brought the nitrogen analysis proce- 

 dure very close to its limits of pre- 

 cision. For this reason, the organic 

 contents should be estimated from 

 the carbon values. 



Calculations of the textural param- 

 eters were made using a programmed 

 IBM 650 and punch card data entry. 

 The other computations were made 

 using a desk calculator. Variability 

 and trend surface analysis has been 

 performed on the data and will appear 

 in a paper in preparation by Drs. 

 Gorsline and Goodell of the Florida 

 State University. Persons interested 

 in obtaining copies of these data should 

 write to Dr. H. G. Goodell at the 

 Department of Geology of the Florida 

 State University. 



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