U.S. Geological Survey Open-File Report 2009-1001
Geological Interpretation of the Sea Floor Offshore of Edgartown, Massachusetts
Figure 21. Interpretation of the sea floor surveyed in National Oceanic and Atmospheric Administration survey H11346. Interpretation includes the locations of buried fluvially cut channels; areas characterized by boulders, sand waves, and shell beds; and the locations of the detailed clips of the sidescan-sonar mosaic shown in figures 22, 23, and 24.