Table T9. Calculated relative abundances based on X-ray diffraction analysis of oriented aggregate clay slides, Hole 1254A.
Core, section,
interval (cm)
Depth
(mbsf)
Relative abundance
Smectite
(wt%)
Illite
(wt%)
Kaolinite/
Chlorite
205-1254A-



3R-3, 114-116 169.24 84.74 0.00 15.26
9R-2, 86-88 302.36 86.85 0.00 13.15
10R-2, 50-52 311.70 84.76 1.64 13.60
12R-1, 101-141 329.91 84.03 0.00 15.97
14R-3, 0-40 350.81 93.11 1.88 5.00
15R-1, 30-31 358.00 91.86 0.00 8.14
15R-1, 65-66 358.35 89.46 0.00 10.54
15R-1, 75-76 358.45 88.33 2.67 9.00
15R-2, 40-41 359.60 87.88 0.00 12.12
15R-2, 100-101 360.20 86.07 2.18 11.74
15R-2, 130-131 360.50 88.08 1.61 10.31
15R-3, 0-44 360.65 78.03 1.61 20.36
15R-4, 20-21 361.35 84.51 0.00 15.49
15R-4, 80-81 361.95 79.89 3.50 16.61
16R-1, 70-71 363.40 78.55 1.90 19.55
16R-2, 30-31 364.50 76.93 3.67 19.41
16R-3, 20-21 365.90 81.10 1.14 17.76
16R-3, 49-89 366.19 81.29 1.51 17.20
16R-4, 60-61 367.24 81.05 3.40 15.55

Note: Peak areas were weighted (smectite by 1, illite by 4, kaolinite/chlorite by 2) and normalized to 100%, as described in Biscaye (1965).