leg site hole core section top of sample interval (m) bottom of sample interval (m) fraction mineral percent 9 83 1 1.60 4.60 BULK CALCITE 96.9 9 83 1 1.60 4.60 BULK QUARTZ 1.4 9 83 2 5.20 11.20 BULK CALCITE 97.1 9 83 2 12.70 12.70 BULK CALCITE 77.8 9 83 2 12.70 12.70 BULK QUARTZ 1.0 9 83 2 12.70 12.70 BULK PLAGIOCLASE 4.5 9 83 2 12.70 12.70 BULK MONTMORILLONITE 12.0 9 83 3 14.80 17.40 BULK CALCITE 81.8 9 83 3 14.80 17.40 BULK QUARTZ 1.0 9 83 3 14.80 17.40 BULK PLAGIOCLASE 4.7 9 83 3 14.80 17.40 BULK MONTMORILLONITE 8.4 9 83 4 71.90 71.90 BULK CALCITE 87.3 9 83 4 71.90 71.90 BULK QUARTZ 1.1 9 83 4 71.90 71.90 BULK PLAGIOCLASE 2.5 9 83 4 71.90 71.90 BULK MONTMORILLONITE 5.8