leg site hole core section top of sample interval (cm) bottom of sample interval (cm) subbottom depth(m) fraction mineral percent 67 494 1 1 010 012 0.10 <2 MICRONS "variety of MONTMORILLONITE" 85.0 67 494 1 1 010 012 0.10 <2 MICRONS CHLORITE 15.0 67 494 3 6 140 142 27.40 <2 MICRONS "variety of MONTMORILLONITE" 75.0 67 494 3 6 140 142 27.40 <2 MICRONS ILLITE 10.0 67 494 3 6 140 142 27.40 <2 MICRONS CHLORITE 15.0