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 68 503 1 1 32.0 32.0 0.00 0.32 1.485 YES HAMILTON FRAME 68 503 1 2 65.0 65.0 0.00 2.15 1.510 YES HAMILTON FRAME 68 503 1 3 67.0 67.0 0.00 3.67 1.521 YES HAMILTON FRAME