![]() ![]() Geophysical, Sedimentological, and Photographic Data from the John Day Reservoir, Washington and Oregon: Data Archive and Preliminary Discussion USGS Open-File 2004-1014
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Figure 9. Click in figure for larger image. Sidescan-sonar image (top panel) and photographs from 2002 (bottom panel) supporting the different facies interpreted from the sidescan-sonar imagery. The photograph from the mud area shows a smooth featureless surface; the photograph from the area where Quaternary strata are exposed shows a mix of sand, gravel and a cobble; and the photograph from the sand area shows some evidence of ripples. Location shown in Figure 3. |