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USGS Coastal and Marine Geology Program

High-Resolution Geologic Mapping of the Inner Continental Shelf: Boston Harbor and Approaches, Massachusetts

Title Page / Table of Contents / List of Figures / Introduction / Maps / Data Collection/Processing / Interpretation / Acknowledgments / Appendix 1 / Appendix 2 / Appendix 3 /


Figure 4.16b. Backscatter intensity from sidescan sonar showing outcropping ledges east of the Brewster Islands.

Figure 4.16b. Backscatter intensity from sidescan-sonar showing outcropping ledges east of the Brewster Islands (see fig. 4.2 for map location).  These ENE-WSW-trending features exhibit the largest topographic variability in the study area and are characterized by moderate backscatter intensity.   Red dots show location of bottom photographs (see Appendix 3 to view all photographs at these locations); yellow dot is location of bottom sediment sample (Appendix 2); number is station identifier. See Figure 4.16a for companion shaded-relief map.

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