Side-scan sonar data
Location | Sonar | Sediments
Profile | Cross Section

Projection: UTM, GRS 1980, NAD83, Zone 17. Coordinates: Geographic. Bathymetry (areas > 4 m) after Gelfenbaum and Guy (1999). Coastal areas (< 4 m) represented by Digital Orthophoto Quarter Quadrangle (1995).

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Location Map
Surface Sediments
Seismic-Profile Data
Transect Cross Section
Side-scan sonar imagery overlain on continuous-tone bathymetry indicates NE-SW trending sand-ridge morphology is most common throughout the inner shelf in this region. Surface-sediment cover is thin and exhibits a patchy and discontinuous distribution. Low backscatter (light gray) areas may correspond to sand ridges and flats dominated by siliciclastic quartz sand. The dark (high backscatter) areas are largely coarse sediment veneer with increased carbonate material (primarily shell material), or some hardbottom. Phosphatic sands also appear to correlate with higher backscatter.