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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