Figure 12. Detailed planar view of the sun-illuminated bathymetry from the combined National Oceanic and Atmospheric Administration surveys in Rhode Island and Block Island Sounds showing the bouldery sea floor near southwestern Block Island. Boulders rest on the winnowed upper surface of the submerged Montauk Point-Block Island segment of the terminal moraine. Location of view is shown in figure 11. Warmer colors denote shallower areas; cooler colors denote deeper areas. Depth key is shown in figure 9.