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 60 461 2 1 100.0 100.0 1.50 2.50 1.555 NO VERTICAL HAMILTON FRAME 60 461 2 2 110.0 110.0 1.50 4.10 1.566 NO VERTICAL HAMILTON FRAME 60 461 2 3 68.0 68.0 1.50 5.18 1.523 NO VERTICAL HAMILTON FRAME