U.S. Geological Survey Open-File Report 2012-1157
Shallow Geology, Seafloor Texture, and Physiographic Zones of the Inner Continental Shelf from Nahant to Northern Cape Cod Bay, Massachusetts
Figure 4. Map showing tracklines of chirp seismic-reflection profiles from Andrews and others (2010) and Barnhardt and others (2010) used to interpret surficial geology and shallow stratigraphy.