[Fig. 10.6. Structure of Atlantic Coastal Plain and adjacent ocean crust from Cape Canaveral 

 to Cape Cod. Thin contour lines are on the ocean floor and are in fathoms. The following 

 contours are in feet. Heavy continuous lines are structure contours on the top of the Pre- 



cambrian crystalline basement. Heavy dashed lines are on the base of velocity layers interpreted 

 to be sediments. Dotted contours are on top of Cretaceous. Compiled from Ewing ef a/., 1950 

 and Hersey ef a/., 1959. 



