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U.S. Geological Survey Open-File Report 2007-1373

High-Resolution Geologic Mapping of the Inner Continental Shelf: Cape Ann to Salisbury Beach, Massachusetts

Skip past contents informationTitle Page / Table of Contents / List of Figures / Introduction / Maps / Data Collection/Processing / Interpretation / Summary / Acknowledgments / References Cited / Appendix 1 / Appendix 2 / Appendix 3 / Appendix 4 / Appendix 5

Figure 3.5. Map showing the isopach of total sediment thickness (all sediment that overlies bedrock). Small, isolated exposures of bedrock (dark gray shading) are covered with sediment less than 0.5 m thick. Sediment-thickness values were interpreted from closely spaced seismic-reflection profiles. In the nearshore area, measured values were used to generate an interpolated grid, but in the offshore area, they are only displayed as discrete points along the widely spaced tracklines.


Figure 3.5.  Map showing the isopach of total sediment thickness (all sediment that overlies bedrock).  Small, isolated exposures of bedrock (dark gray shading) are covered with sediment less than 0.5 m thick.  Sediment-thickness values were interpreted from closely spaced seismic-reflection profiles.  In the nearshore area, measured values were used to generate an interpolated grid, but in the offshore area, they are only displayed as discrete points along the widely spaced tracklines. 

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