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 65 484 1 1 112.0 112.0 0.00 1.12 1.490 YES VERTICAL HAMILTON FRAME 65 484 1 2 121.0 121.0 0.00 2.71 1.511 YES VERTICAL HAMILTON FRAME 65 484 1 4 28.0 28.0 0.00 4.78 1.503 YES VERTICAL HAMILTON FRAME