bottom during coring, thus permitting limited motion of the support vessel in response to 

 waves. Power is supplied to the vibrator from a deck -mounted air compressor by means of a 

 flexible hoseline. After the core is driven and returned, the Uner containing the cored 

 material is removed and capped. 



d. Processing. Seismic records are analyzed to establish the principal bedding or 

 structural features in upper subbottom strata. After preUminary analysis, record data is 

 reduced to detailed cross-section profiles showing aU reflective interfaces within the 

 subbottom. Selected reflectors are then mapped to provide areal continuity of reflective 

 horizons considered significant because of their extent and relationship to the general 

 structure and geology of the study area. If possible, the upper mapped reflector is correlated 

 with core data to provide a measure of continuity between cores. 



Cores are visually inspected and lo^ed aboard ship. After deUvery to CERC, these cores 

 are sampled by drilUng through the Uners and removing samples of representative material. 

 After preUminary analysis, a number of representative cores are spUt in order to determine 

 details of the bedding. Cores are set up for splitting on a wooden trough. A circular power 

 saw mounted on a base which is designed to ride along the top of the trough is set so as to 

 cut just through the Uner. By making a cut in one direction and then reversing the saw base 

 and making a second cut in the opposite direction, a 120° segment of the Uner 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 Uthology, mineralogy, and the type and abundance of skeletal fragments of 

 organisms. 

 3. Scope. 



The area covered by this report extends along the east Florida coast and adjacent 

 Continental Shelf, from south of Canaveral Harbor (28°20' N.) north to False Cape 

 (28°40' N.). The adjacent coastal segment, from Canaveral Harbor to Fort Pierce, is covered 

 in CERC's Technical Memorandum No. 34. (Meisburger and Duane, 1971.) Figure 1 is a 

 map of the location of the survey area and major geographic features of the region. Field 

 work (conducted between January and May 1965) and preUminary reduction of geophysical 

 data in support of the study was accompUshed by contract. (Alpine Geophysical Associates, 

 Inc.) Data coUected and report"!d consists of continuous seismic reflection profiles covering 

 360 statute miles of survey Une and 90 sediment cores ranging from 6 to 14 feet long. (See 

 Figure 2.) AnciUary studies were conducted on the seismic profiles and sediment cores 

 obtained from the adjacent region to the south studied by Meisburger and Duane (1971) for 

 comparison and correlation of sediments lying between the Fort Pierce and Cape Canaveral 

 areas. 



Basic data processing covered analysis and reduction of geophysical records, visual 

 description and size analysis of sediment samples from the cores, and construction of 

 large-scale navigation overlays showing the position of geophysical Unes and cores. Field 

 data was supplemented by Uterature pertaining to the region and by the National Ocean 

 Survey hydrographic smooth-sheet coverage at 1:40,000 scale. 



