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 64 479 13 CC 10.0 10.0 107.50 110.85 4.400 NO HORIZONTAL HAMILTON FRAME 64 479 20 3 82.0 82.0 174.00 177.82 4.787 NO HORIZONTAL HAMILTON FRAME 64 479 29 1 22.0 22.0 259.50 259.72 4.057 NO HAMILTON FRAME 64 479 35 4 145.0 145.0 316.50 322.45 1.457 NO VERTICAL HAMILTON FRAME