Cores are visually inspected and logged aboard ship. After delivery to CERC, these cores 

 are sampled every foot by drilling through the liners and removing samples of representative 

 material. After preliminary analysis, a number of representative cores are split to determine 

 details of the bedding. 



Cores are set up for spUtting on a wooden trough. A circular powersaw mounted on a 

 base which is designed to ride along the top of the trough is set so as to cut just through the 

 liner. By making a cut in one direction and then reversing tlie saw base and making a second 

 cut in the opposite direction, a 120° segment of the liner is cut. The sediment above the cut 

 Une is then removed with a spatula, and the core is logged, sampled, and photographed. 



Samples from cores are examined under a binocular microscope, and described in terms 

 of gross lithology, mineralogy, and the type and abundance of skeletal fragments of 

 organisms. Petrograpliic analysis through transmitted-light microscopy was performed on 

 certain core samples that coincided with prominent acoustic reflectors to further deUneate 

 their nature and origin of associated sediments. 



Foraminifera in 200 representative samples were concentrated by panning and the more 

 common types were identified; primary references were Cushman (1930, 1947), Cushman 

 and Ponton (1932), Parker (1948), Phleger and Parker (1951), Puri (1953b), Bandy (1956), 

 Loebhch and Tappan (1964), Wilcoxon (1964), Buzas (1966), Schnitiker (1971), and Akers 

 (1972). MoUusks contained in the sediments were identified primarily with reference to 

 Mansfield (1930, 1932), Gardner (1943, 1948), and Abbot (1954, 1968). A representative 

 sample of Type L sediment was also submitted to the Paleontology and Stratigraphy 

 Branch, U.S. Geological Survey, for detailed analysis and age determination. 

 3. Scope. 



The area covered in tliis report comprises the east Florida coast and adjacent Continental 

 Shelf from the Florida-Georgia boundary (30°42'N.) to False Cape (28°40'N.) on Canaveral 

 Peninsula. A map of the study area (Fig. 1) shows the major geographic features of the 

 region; Figures 2 through 5 show the ICONS survey coverage. ICONS studies of the Florida 

 Atlantic coast south of this study area are contained in three CERC Technical 

 Memorandums: No. 29, Miami to Palm Beach (Duane and Meisburger, 1969); No. 34, Palm 

 Beach to Cape Canaveral (Meisburger and Duane, 1971); and No. 42, Cape Canaveral (Field 

 and Duane, 1974). 



Field survey and data collection for this study were accomplished by contract between 

 August 1966 and February 1967. This work produced 1,153 statute mUes of continuous 

 seismic reflection profiles and 197 vibratory cores (3-inch diameter) of sea floor and 

 subfloor sediments ranging from 1 to 15.5 feet long. 



Data processing included analysis of all seismic reflection records and reduction to line 

 profile drawings. Cores were logged and sampled to provide sediment representative of each 

 sediment or rock facies penetrated. The samples were visually described and size analysis 

 was made by means of a fall velocity-type rapid sediment analyzer. The positions of cores 

 and seismic reflection profile lines were plotted at 1:80,000 and 1:24,000 scale (Fig. 2). 



10 



