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 65 482 A 1 4 82.0 82.0 0.00 5.32 1.511 YES VERTICAL HAMILTON FRAME 65 482 A 2 4 63.0 63.0 6.00 11.13 1.496 YES VERTICAL HAMILTON FRAME 65 482 A 4 4 80.0 80.0 25.00 30.30 1.525 NO VERTICAL HAMILTON FRAME