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 26. Sediment texture polygons are assigned a data interpretation confidence value between 1 and 4 based on the resolution and number of input data sources. The highest interpretation confidence value is 1 and the lowest is 4.