BARRIER ISLAND 



BACKSHORE 



BACK BARRIER DUNE 

 LAGOON f^ARSH FLAT 



FORESHORE/BEACH 



SHOREFACE 



STRAND PLAIN 



OLDER 

 BEACH RIDGES 



BEACH RIDGE\ 

 DUNE 

 MARSH , FORESHORE/BEACH 



TIDAL FLAT 



SALT MARSH 



Mim. 



TIDAL SAND FLAT 

 HT — 



SHELF 



Figure 14. Surface and subsurface environments and variations of barrier islands, strand plain 

 coasts, and tidal flats 



Chapter 3 Variable Coastal Features 



37 



