leg site hole core section top of sample interval (m) bottom of sample interval (m) fraction mineral percent 13 129 A 3 78.00 79.60 CLAY 'diffuse scattering' measure 83.0 13 129 A 3 78.00 79.60 CLAY 'amorphous material' measure 73.4 13 129 A 3 78.00 79.60 CLAY QUARTZ 6.8 13 129 A 3 78.00 79.60 CLAY MICA 34.1 13 129 A 3 78.00 79.60 CLAY CHLORITE 7.9 13 129 A 3 78.00 79.60 CLAY MONTMORILLONITE 11.5