Figure F18. Average core recovery and rate of penetration for drilling in Hole 1256D during Leg 206 and Expedition 309/312. Note the improvement in both parameters in gabbroic rocks back to near average rates for the entire hole (~36% recovery; 1.2 m/h penetration rate). Recovery was very low and penetration rate excruciatingly slow in the granoblastic dikes. ROP = rate of penetration.
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