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Sidescan-Sonar Imagery, Multibeam Bathymetry, and Surficial Geologic Interpretations of the Sea Floor in Rhode Island Sound, off Sakonnet Point, Rhode Island


Skip past contents informationTitle | Introduction | Geologic Setting | Data Acquisition/Processing | Bathymetry | Sidescan-Sonar Imagery | Environments | Discussion | Summary | GIS Data Catalog | Acknowledgments | References | Figures | Contacts


Figure 4. Map showing the location of end moraines

Figure 4. Map showing the location of end moraines (solid black polygons) in southern New England and New York . The Ronkonkoma-Nantucket moraine shows the maximum extent of the Laurentide ice sheet 20 ka, while the Harbor Hill-Roanoke Point-Charlestown-Buzzards Bay moraine shows a retreated position of the ice sheet around 18 ka (Uchupi and others, 1996). Submarine ridges (dotted lines) mark the underwater extensions of the moraines. H11320 study area shown as a gray polygon. Modified from Gustavson and Boothroyd (1987).

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