leg site hole core section top of sample interval(cm) bottom of sample interval (cm) subbottom depth(m) fraction mineral percent 48 400 1 1 059 0.59 BULK QUARTZ 8.0 48 400 1 1 059 0.59 BULK CALCITE 50.0 48 400 1 4 074 6.43 BULK QUARTZ 18.0 48 400 1 4 074 6.43 BULK CALCITE 9.0