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Figure F3. Caliper, gamma ray, annular pressure while drilling (APWD), annular pressure in excess of hydrostatic (APWD*), and equivalent circulating density referenced to the seafloor (ECDrsf), extracted 2-D seismic traces and seismic reflectors (SF = seafloor) in Hole U1321A. Near-linear increase in APWD, especially below 67 mbsf, is interpreted as stable borehole conditions without shallow-water flow problems. Variations in APWD*, ECDrsf, and caliper measurements are interpreted to be due to loose material filling the borehole annulus, especially when encountering sand-rich intervals.

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