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 79 544 1 1 140.0 140.0 0.00 1.40 1.574 YES HORIZONTAL HAMILTON FRAME 79 544 1 2 146.0 146.0 0.00 2.96 1.564 YES HORIZONTAL HAMILTON FRAME