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Table T2. Results of X-ray diffraction analyses (<2 µm size fraction) for cuttings samples (1–4 mm), Hole C0002F.

Cuttings interval Depth (mbsf) Integrated peak area (total counts) Relative abundance in clay-size fraction Relative abundance in bulk sediment (wt%)
SVD normalization factors (wt%) Biscaye factors (%)*
Smectite (001) Illite (001) Kaolinite (001) + chlorite (002) Quartz (100) Kaolinite (002) + chlorite (004) Half peak chlorite (004) Smectite Illite Kaolinite + chlorite Quartz Kaolinite Chlorite Smectite Illite Kaolinite + chlorite Total clay minerals Smectite Illite Kaolinite + chlorite
338-C0002F-
Unit IV
82 1190.5 26424 4669 3978 220 2778 1328 43.7 36.8 19.3 0.2 1.2 18.1 50 35 15 53.7 23.5 19.8 10.4
86 1219.5 21392 4066 3336 166 2593 1170 42.0 38.3 19.4 0.3 2.7 16.8 48 37 15 53.3 22.4 20.5 10.4
96 1250.5 32558 3696 3372 271 2588 1292 55.1 29.3 15.4 0.2 0.0 15.4 60 27 12 51.7 28.5 15.2 8.0
100 1270.5 32249 4574 2936 269 1895 969 52.4 34.7 12.7 0.2 0.0 12.7 57 32 10 56.4 29.6 19.6 7.2
104 1290.5 27847 3325 3306 338 2335 1176 51.6 28.6 17.1 2.7 0.0 17.1 58 28 14 56.7 30.1 16.7 10.0
108 1310.5 31030 4522 3948 301 3007 1352 48.6 33.2 17.5 0.7 2.5 15.1 54 32 14 53.3 26.1 17.8 9.4
112 1330.5 29404 4388 4236 347 3276 1451 46.2 32.2 19.2 2.5 3.1 16.1 53 32 15 52.4 24.8 17.3 10.3
116 1350.5 29158 4662 3662 268 2615 1163 47.3 35.6 16.9 0.3 2.6 14.3 53 34 13 62.0 29.4 22.1 10.5
122 1370.5 43842 5547 3830 182 2341 1016 54.8 32.9 12.2 0.2 2.2 9.9 59 30 10 61.1 33.5 20.1 7.4
126 1390.5 24769 3354 3035 287 2420 1159 49.5 31.2 17.1 2.3 1.0 16.0 56 30 14 57.8 29.3 18.4 10.1
132 1410.5 32564 5447 4640 435 3580 1443 44.1 34.1 18.1 3.6 4.8 13.3 51 34 15 55.7 25.5 19.7 10.5
136 1430.5 33448 5642 5242 438 3650 1941 43.1 33.8 19.7 3.4 0.0 19.7 50 34 16 53.9 24.1 18.8 11.0
140 1450.5 30385 3987 4027 245 2628 1147 49.9 31.0 18.9 0.2 3.3 15.5 56 29 15 50.9 25.5 15.8 9.6
144 1470.5 28486 4489 4287 359 2625 1165 44.7 32.8 19.5 3.1 3.1 16.4 52 33 16 55.5 25.6 18.8 11.2
150 1490.5 33565 5283 4854 232 3971 1895 45.9 34.6 19.4 0.2 1.3 18.1 52 33 15 55.9 25.7 19.4 10.8
155 1510.5 21361 6122 4548 380 2776 1228 32.2 41.6 20.4 5.7 3.3 17.2 39 45 17 57.4 19.6 25.3 12.5
161 1530.5 24835 3923 4212 373 3131 1668 42.8 31.2 21.2 4.8 0.0 21.2 51 32 17 58.3 26.2 19.1 13.0
167 1550.5 20722 3741 4596 291 3404 1927 38.1 32.4 25.6 4.0 0.0 25.6 46 33 20 57.3 22.7 19.3 15.3
177 1590.5 31102 4989 4917 403 4126 1713 43.8 32.7 20.2 3.3 4.7 15.5 51 33 16 56.8 25.7 19.2 11.9
184 1610.5 34264 6039 6879 361 5168 2853 40.1 33.8 24.5 1.6 0.0 24.5 47 33 19 55.5 22.6 19.1 13.8
189 1630.5 40236 6066 7011 369 4785 2149 44.5 32.0 23.2 0.4 3.3 19.9 51 31 18 53.6 23.9 17.2 12.5
195 1650.5 25257 5316 6153 402 4537 2443 34.9 34.3 25.8 5.0 0.0 25.8 43 36 21 53.1 19.5 19.2 14.4
201 1670.5 29727 5171 5965 354 3919 1444 40.1 33.1 24.3 2.6 8.6 15.7 48 33 19 54.0 22.2 18.3 13.5
209 1710.5 36947 6335 6865 465 5017 2095 41.1 33.1 22.8 3.0 5.2 17.6 49 33 18 51.0 21.6 17.4 12.0
213 1730.5 10640 2532 3371 323 2944 1116 30.3 31.2 27.4 11.0 9.0 18.4 39 37 25 54.9 18.7 19.3 16.9
Mean: 44.3 33.4 19.9 2.5 2.5 17.4 51 33 16 55.3 25.1 18.9 11.3
Standard deviation: 6.3 2.7 3.8 2.5 2.5 3.8 5 4 3 2.8 3.6 2.0 2.3
Unit V
217 1750.5 25195 3829 4586 274 3048 1675 43.4 31.3 23.6 1.8 0.0 23.6 51 31 18 50.6 22.3 16.1 12.2
223 1770.5 30331 4954 4963 175 3161 1301 43.7 34.7 21.4 0.2 5.2 16.2 50 33 17 50.9 22.3 17.7 10.9
229 1790.5 29102 4615 5295 307 3107 1205 42.8 32.3 23.3 1.5 7.1 16.2 50 32 18 59.3 25.8 19.5 14.1
233 1810.5 35576 9648 7113 243 4948 1968 33.7 45.0 21.1 0.1 5.9 15.2 40 44 16 60.3 20.4 27.2 12.8
238 1830.5 34256 5943 6164 222 4229 2209 41.7 35.3 22.9 0.2 0.0 22.9 49 34 18 58.9 24.6 20.8 13.5
250 1850.5 31783 6159 7322 459 5323 2360 36.7 33.5 25.7 4.2 4.1 21.6 45 35 21 59.2 22.7 20.7 15.9
255 1870.5 30565 6861 7022 321 4976 2399 35.1 38.1 25.1 1.7 1.3 23.9 42 38 19 59.9 21.4 23.2 15.3
265 1910.5 22623 6675 7039 339 4407 1993 28.2 39.8 27.8 4.1 3.7 24.1 36 42 22 60.6 17.8 25.2 17.6
269 1930.5 36045 6383 7246 367 5464 2954 40.1 34.0 24.6 1.3 0.0 24.6 47 34 19 58.9 23.9 20.3 14.7
274 1950.5 22607 7738 7643 351 5333 2285 25.7 42.2 27.8 4.3 5.5 22.3 33 45 22 60.3 16.2 26.6 17.5
282 1970.5 27965 8532 7220 299 4353 1797 29.7 44.0 24.4 2.0 5.9 18.5 37 45 19 No bulk powder data
286 1990.5 34013 7448 5572 315 3178 1661 39.2 40.9 19.2 0.7 0.0 19.2 45 40 15 55.7 22.0 22.9 10.8
Mean: 36.7 37.6 23.9 1.8 3.2 20.7 44 38 19 57.7 21.8 21.8 14.1
Standard deviation: 6.2 4.7 2.6 1.6 2.8 3.5 6 5 2 3.7 2.8 3.5 2.4

* = Biscaye (1965) peak area weighting factors are 1 × smecite, 4 × illite, and 2 × chlorite + kaolinite. SVD = singular value decomposition.

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