leg site hole core section top of sample interval(cm) bottom of sample interval (cm) subbottom depth(m) fraction mineral percent 65 484 1 2 021 023 1.72 BULK CLAY MINERALS 74.0 65 484 1 2 021 023 1.72 BULK QUARTZ 12.0 65 484 1 2 021 023 1.72 BULK FELDSPAR (undifferentiated) 8.0 65 484 1 2 021 023 1.72 BULK CALCITE 6.0