CONTENTS 



FIGURES--Continued 



Page 



10 Smoothed fathometer profiles for two nearshore shoals 34 



11 Detailed bathymetry of the northern Virginia Inner 



Continental Shelf 35 



12 Acoustic records produced by the three types of seismic 



reflection equipment used in this study 37 



13 Generalized cross-sectional profile of the shallow 



subsurface off northern Assateague Island showing 



major seismic reflection surfaces and reflection units 38 



14 Structure contour map on the surface of the acoustic 



reflector A 2 41 



15 Structure contour map on the surface of acoustic 



reflector B 1 43 



16 Structure contour map of the pre-Holocene erosional 



drainage surface off Delaware 45 



17 Location map and interpreted acoustic profiles of buried 



and surface channels in Delaware Bay entrance 46 



18 Map showing location and thalweg depths of buried channels 



on the inner shelf between Bethany Beach, Delaware, and 

 Maryland-Virginia State line 48 



19 Interpreted acoustic profiles across buried channels on the 



inner shelf between Bethany Beach, Delaware, and Ocean City, 

 Maryland 49 



20 Interpreted acoustic profiles across buried channels on the 



inner shelf between Ocean City and Virginia State line 50 



21 Plot of maximum thalweg depth of buried channels versus 



distance from shoreline 52 



22 Interpreted seismic reflection profiles across 



Great Gull Banks 53 



23 Locations of vibratory cores used in this study shown in 



relation to shelf topography 56 



24 Map showing surface distribution of major sediment types 



defined in this study in relation to sea floor topography ... 60 



6 



