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Table T3. Illite/smectite expandability values, illite abundance in illite/smectite (I/S) mixed-layer clay, and illite crystallinity index for core samples (<2 µm size fraction), Hole C0002P.

Core, section,
interval (cm)
Depth
(mbsf)
Intensity
saddle (cps)
Intensity
peak (cps)
Ratio saddle:
peak
Expandability
(%)
I (002) +
S (003) (°2θ)
Illite in I/S
(%)
Illite crystallinity
(Δ°2θ)
348-C0002P-
1R-1, 0 2163.00 195 308 0.63 65 16.15 42 0.52
2R-1, 35 2172.85 276 393 0.70 62 16.37 53 0.50
2R-2, 43 2174.35 233 439 0.53 69 16.06 34 0.45
2R-3, 137 2176.70 236 416 0.57 68 16.21 46 0.52
2R-4, 27 2177.00 160 192 0.83 65 16.42 54 0.47
3R-1, 35 2182.35 247 433 0.57 68 15.92 23 0.53
3R-2, 60 2184.01 227 390 0.58 67 16.20 45 0.50
4R-1, 39 2191.89 154 297 0.52 70 16.26 48 0.53
4R-2, 135 2193.96 210 322 0.65 64 16.42 54 0.50
4R-3, 72 2194.77 Peak not properly resolved 16.27 49 0.71
4R-4, 32 2195.33 250 456 0.55 69 15.98 27 0.52
4R-5, 125 2197.64 264 484 0.55 69 16.18 44 0.46
4R-6, 54 2198.43 232 457 0.51 71 16.25 48 0.58
5R-1, 95 2201.95 208 375 0.55 68 16.27 49 0.56
5R-2, 99 2203.43 Peak not properly resolved 16.07 35 0.62
5R-3, 0 2203.85 222 365 0.61 66 16.23 47 0.47
5R-5, 2 2205.57 201 1387 0.14 90 15.82 13 0.40
6R-1, 77 2209.77 260 392 0.66 64 16.37 53 0.51
6R-2, 37 2210.78 194 514 0.38 78 16.04 31 0.52
6R-3, 37 2212.19 248 489 0.51 71 16.10 39 0.51
6R-4, 103 2214.26 66 172 0.38 77 16.16 43 0.54
6R-5, 94 2215.58 Peak not properly resolved 16.21 46 0.69
6R-6, 77 2216.83 224 609 0.37 78 16.03 30 0.45
Mean: 69.9   41.3 0.52
Standard deviation: 6.5   10.9 0.07

cps = counts per step.

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