MIAMI • 

 BOTTOM SEDIMENTS "~^X 



f xiji-I] GRAVEL f;' -V.-'.;'-| SAND 



J SHELL i_SjJ SILT-CLAY 



\ T\ \ 



^o 



Figure 1. — Chart of U.S. east coast showing sampling locations for bivalve 

 collection. 



Figure 2. — Distribution of predominant bottom sediments. 



68 



