leg site hole core section top of sample interval (m) bottom of sample interval (m) fraction mineral percent 18 179 2 3.50 5.30 CLAY 'diffuse scattering' measure 80.1 18 179 2 3.50 5.30 CLAY 'amorphous material' measure 68.9 18 179 2 3.50 5.30 CLAY QUARTZ 14.4 18 179 2 3.50 5.30 CLAY PLAGIOCLASE 16.3 18 179 2 3.50 5.30 CLAY MICA 35.5 18 179 2 3.50 5.30 CLAY CHLORITE 17.5 18 179 2 3.50 5.30 CLAY MONTMORILLONITE 12.0 18 179 2 3.50 5.30 CLAY GYPSUM 1.0 18 179 4 22.50 25.70 CLAY 'diffuse scattering' measure 75.6 18 179 4 22.50 25.70 CLAY 'amorphous material' measure 61.9 18 179 4 22.50 25.70 CLAY QUARTZ 11.8 18 179 4 22.50 25.70 CLAY PLAGIOCLASE 11.5 18 179 4 22.50 25.70 CLAY MICA 37.1 18 179 4 22.50 25.70 CLAY CHLORITE 20.8 18 179 4 22.50 25.70 CLAY MONTMORILLONITE 14.7 18 179 4 22.50 25.70 CLAY GYPSUM 1.3 18 179 8 60.50 65.60 CLAY 'diffuse scattering' measure 77.4 18 179 8 60.50 65.60 CLAY 'amorphous material' measure 64.8 18 179 8 60.50 65.60 CLAY QUARTZ 14.9 18 179 8 60.50 65.60 CLAY PLAGIOCLASE 16.2 18 179 8 60.50 65.60 CLAY MICA 33.2 18 179 8 60.50 65.60 CLAY CHLORITE 12.9 18 179 8 60.50 65.60 CLAY MONTMORILLONITE 19.1 18 179 8 60.50 65.60 CLAY GYPSUM 1.9 18 179 10 79.50 83.40 CLAY 'diffuse scattering' measure 76.1 18 179 10 79.50 83.40 CLAY 'amorphous material' measure 62.7 18 179 10 79.50 83.40 CLAY QUARTZ 16.5 18 179 10 79.50 83.40 CLAY PLAGIOCLASE 19.3 18 179 10 79.50 83.40 CLAY MICA 35.3 18 179 10 79.50 83.40 CLAY CHLORITE 21.1 18 179 10 79.50 83.40 CLAY MONTMORILLONITE 4.9 18 179 11 89.00 92.50 CLAY 'diffuse scattering' measure 82.2 18 179 11 89.00 92.50 CLAY 'amorphous material' measure 72.2 18 179 11 89.00 92.50 CLAY QUARTZ 2.7 18 179 11 89.00 92.50 CLAY PLAGIOCLASE 10.3 18 179 11 89.00 92.50 CLAY MICA 3.0 18 179 11 89.00 92.50 CLAY CHLORITE 1.5 18 179 11 89.00 92.50 CLAY MONTMORILLONITE 79.9