leg site hole core section top interval depth (cm) bottom interval depth (cm) top of core depth (m) sample depth (m) sonic velocity (km/sec)temperature(degrees C) split core orientation instrument code 29 284 A 2 2 75.0 75.0 27.50 29.75 1.579 YES HAMILTON FRAME 29 284 A 2 2 135.0 135.0 27.50 30.35 1.571 YES HAMILTON FRAME