leg site hole core section top of sample interval(cm) bottom of sample interval (cm) subbottom depth(m) fraction mineral percent 67 498 A 5 3 008 010 215.08 BULK CALCITE 1.0 67 498 A 8 2 016 018 242.16 BULK CALCITE 8.0 67 498 A 13 1 038 040 288.38 BULK CALCITE 3.0