IODP Expedition 309/312: Superfast Spreading Rate Crust 2 and Superfast Spreading Rate Crust 3
Figure 6

Velocity-depth plot of Hole 1256D showing wireline sonic and check-shot interval velocities from Expedition 312 and Leg 206. Logging and core bulk density data from Hole 1256D are also shown. The increase in velocity in the sheeted to granoblastic dike boundary to values around 7.0 km/s is apparent.