Figure F6. Pressure and depth vs. time profiles for Holes (A) 1226B and (B) 1226E. Mean (±1) rates were calculated along the linear portion of the profiles between 1500 and 3000 m. Mean descent rate for Hole 1226B = 235 ± 5 m/min; the ascent rate = 240 ± 5 m/min. Mean descent rate for Hole 1226E = 227 ± 15 m/min; the ascent rate = 219 ± 13 m/min. Pressure was measured and depth was calculated as described in the text.