JACKSONVILLE 

 BEACH 



PONTE VEDRA 

 BEACH 



1/2 1 2 3 4 5 

 Scale in Naulrcol Miles 



'I 2 3 4 5 6 7 

 Scale in Kflometers 



Core Location 



Location of Cores Contolning 



Tertiary Sediments 



0-5 ft. 

 5-IOf1. 

 >IOft, 



ST. AUGUSTINE 



Figure 33. Map of the Jacksonville to St. Augustine area showing relationship between depth to first 

 reflection and locations of cores bearing Tertiary sediments. Depth to first reflector, or 

 overburden thickness, was determined by acoustic data and is indicated by a Zip-a-tone pattern. 

 Note the close association. Acoustic data north of St. Augustine (reconnaissance line) is too 

 sparse to contour. Note the close association in the grid area of cores containing Tertiary 

 material (X's) with acoustic data showing areas of thin (< 10 feet) overburden. Shore-normal 

 hues in the grid area refer to lines in Figure 26. This figure (at same scale) ties to Figure 22. 



66 



