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Table T2. Summary of lithologic intervals and their classification to units, Hole U1415J.

Unit Description Core, section, interval (cm) Depth (mbsf) Pieces Lithologic interval Contact type Contact definition Complete lithology name
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    345-U1415J-
I Surficial rubble 2G-1A, 0–4 10.000 10.04 1 G1 Not recovered   Aphyric basalt
2G-1A, 4–8 10.040 10.08 1 G2 Not recovered   Dolerite
2G-1A, 8–12 10.080 10.12 1 G3 Not recovered   Dolerite
2G-1A, 12–13 10.120 10.13 1 G4 Not recovered   Basalt
3R-1A, 0–6 15.000 15.06 1, 2 1 Not recovered   Gabbro
3R-1A, 7–8 15.070 15.08 3 2 Not recovered   Olivine-bearing dolerite
3R-1A, 8–9 15.080 15.09 3 3 Not recovered   Aphyric basalt
3R-1A, 9–10 15.090 15.10 3 4 Not recovered   Doleritic gabbro
3R-1A, 11–17 15.110 15.17 4 5 Not recovered   Olivine gabbro
3R-1A, 18–28 15.180 15.28 5, 6 6 Not recovered   Olivine-bearing gabbro
3R-1A, 29–37 15.290 15.37 7, 8 7 Not recovered   Clinopyroxene oikocryst-bearing troctolite
3R-1A, 37–40 15.370 15.40 8 8 Not recovered   Olivine gabbro
3R-1A, 40–42 15.400 15.42 9 9 Modal Sharp to gradational Clinopyroxene oikocryst-bearing troctolite
3R-1A, 43–78 15.430 15.78 10, 11, 12, 13,
14, 15		 10 Not recovered   Olivine gabbro
3R-1A, 79–86 15.790 15.86 16 11 Not recovered   Gabbro
4R-1A, 13–19 22.330 22.39 1, 2 12 Not recovered   Gabbro
4R-1A, 20–23 22.400 22.43 3 13 Not recovered   Clinopyroxene oikocryst-bearing olivine gabbro
4R-1A, 20–23 22.400 22.43 4 14 Not recovered   Alteration vein
II Oikocryst-Bearing
Layered Gabbro
Series		 5R-1A, 0–4 26.200 26.24 1 15 Not recovered   Gabbro
5R-1A, 5–12 26.250 26.32 2, 3 16 Not recovered   Olivine gabbro
5R-1A, 12–24 26.320 26.44 4, 5 17 Not recovered   Orthopyroxene-bearing gabbro
5R-1A, 25–27 26.450 26.47 6 18 Not recovered   Gabbro
5R-1A, 28–44 26.480 26.64 7, 8 19 Not recovered   Clinopyroxene oikocryst-bearing troctolite
5R-1A, 44–59 26.640 26.79 9, 10, 11 20 Not recovered   Oikocryst gabbro
5R-1A, 59–80 26.790 27.00 12, 13 21 Not recovered   Clinopyroxene oikocryst-bearing olivine gabbro
5R-1A, 81–85 27.010 27.05 14 22 Not recovered   Clinopyroxene oikocryst-bearing olivine gabbro
5R-1A, 86–98 27.060 27.18 15, 16 23 Not recovered   Olivine bearing gabbro
5R-1A, 99–121 27.190 27.41 17 24 Not recovered   Clinopyroxene oikocryst-bearing troctolite
5R-1A, 121–125 27.410 27.45 17 25 Modal   Olivine-bearing gabbronorite
5R-1A, 125–132 27.450 27.52 17, 18 26 Modal and textural   Olivine-bearing gabbro
5R-1A, 132–136 27.520 27.56 18 27 Modal and textural   Olivine-bearing gabbronorite
5R-1A, 136–144 27.560 27.64 18 28 Modal and textural   Clinopyroxene oikocryst-bearing troctolite
5R-2A, 0.5–2.5 27.640 27.66 1 29 Not recovered   Troctolite
5R-2A, 2.5–6.5 27.660 27.70 1 30 Modal and textural   Olivine-bearing gabbronorite
5R-2A, 6.5–9 27.700 27.73 1 31 Modal and textural   Troctolite
5R-2A, 9–63 27.725 28.27 1, 2, 3 32 Modal and textural   Olivine-bearing gabbronorite
8R-1A, 0–5 34.900 34.95 1 33 Not recovered   Gabbro
8R-1A, 5–12 34.950 35.02 2 34 Not recovered   Olivine gabbro
8R-1A, 13–16 35.030 35.06 3 35 Not recovered   Clinopyroxene oikocryst-bearing troctolite
8R-1A, 17–21 35.070 35.11 4 36 Not recovered   Olivine gabbro
8R-1A, 22–73 35.120 35.63 5, 6, 7, 8, 9, 10,
11, 12, 13		 37 Not recovered   Clinopyroxene oikocryst-bearing troctolite
8R-1A, 74–108 35.640 35.98 13, 14 38 Color Sharp to gradational Oikocryst gabbro
8R-1A, 109–122 35.990 36.12 15, 16 39 Not recovered   Olivine gabbro
8R-1A, 123–147 36.130 36.37 17, 18 40 Not recovered   Clinopyroxene oikocryst-bearing troctolite
8R-2A, 0–111 36.370 37.48 1, 2, 3, 4, 5, 6,
7, 8, 9		 41 Not recovered   Clinopyroxene oikocryst-bearing troctolite
8R-2A, 111–116 37.480 37.53 9 42 Modal and textural Sharp to gradational Olivine-bearing gabbro
8R-2A, 116–143 37.530 37.80 9, 10, 11, 12,
13		 43 Modal and textural Sharp to gradational Olivine gabbro
8R-2A, 143–149 37.800 37.86 13 44 Modal and textural Sharp to gradational Troctolite
8R-3A, 0–10 37.860 37.96 1, 2 45 Not recovered   Troctolite
8R-3A, 11–22 37.970 38.08 3, 4 46 Not recovered   Oikocryst gabbro
8R-3A, 23–30 38.090 38.16 5 47 Not recovered   Clinopyroxene oikocryst-bearing troctolite
8R-3A, 31–76 38.170 38.62 6, 7, 8 48 Not recovered   Olivine-bearing gabbro
8R-3A, 77–93 38.630 38.79 9 49 Not recovered   Clinopyroxene oikocryst-bearing troctolite
8R-3A, 94–143 38.800 39.29 10, 11, 12, 13,
14, 15		 50 Not recovered   Olivine-bearing gabbro
9R-1A, 0–9 45.200 45.29 1 51 Not recovered   Orthopyroxene-bearing olivine gabbro
9R-1A, 10–17 45.300 45.37 2 52 Not recovered   Clinopyroxene oikocryst-bearing troctolite
9R-1A, 18–29 45.380 45.49 3 53 Not recovered   Olivine-bearing gabbro
9R-1A, 30–34 45.500 45.54 4 54 Not recovered   Oikocryst gabbro
9R-1A, 35–96 45.550 46.16 5, 6, 7, 8, 9, 10,
11, 12, 13		 55 Not recovered   Olivine-bearing gabbro
9R-1A, 97–100 46.170 46.20 14 56 Not recovered   Aphyric basalt
9R-1A, 101–110 46.210 46.30 15 57 Not recovered   Orthopyroxene-bearing olivine gabbro
III Troctolite Series 10R-1A, 0–50 55.300 55.85 1, 2, 3, 4, 5, 6 58 Not recovered   Troctolite
10R-1A, 50–56 55.750 55.85 6 59 Modal and textural Sharp to gradational Olivine gabbro
10R-1A, 56–63 55.860 55.93 7 60 Not recovered   Troctolite
11R-1A, 0–50 65.000 65.50 1, 2, 3, 4, 5, 6,
7		 61 Not recovered   Troctolite
12R-1A, 0–51 69.700 70.21 1, 2, 3, 4, 5, 6,
7, 8		 62 Not recovered   Troctolite
12R-1A, 52–147 70.220 71.17 9, 10, 11, 12,
13, 14, 15,
16, 17, 18		 63 Not recovered   Olivine gabbro
12R-2A, 0–9 71.165 71.26 1 64 Not recovered   Olivine gabbro
13R-1A, 0–7 74.700 74.77 1 65 Not recovered   Olivine gabbro
13R-1A, 8–65 74.780 75.35 2, 3, 4, 5, 6, 7,
8		 66 Not recovered   Troctolite
18R-1A, 0–25 84.400 84.65 1, 2, 3 67 Not recovered   Troctolite
18R-1A, 26–29 84.660 84.69 4 68 Not recovered   Olivine-moderately phyric basalt
18R-1A, 30–66 84.700 85.06 5, 6, 7, 8 69 Not recovered   Troctolite
18R-1A, 67–72 85.070 85.12 9 70 Not recovered   Completely altered chromitite
18R-1A, 73–128 85.130 85.68 10, 11, 12, 13,
14, 15, 16		 71 Not recovered   Troctolite
18R-1A, 129–150 85.690 85.90 17 72 Modal   Troctolite
19R-1A, 0–56 89.100 89.66 1, 2, 3, 4, 5, 6,
7, 8,		 73 Not recovered   Troctolite
19R-1A, 57–70 89.670 89.80 9, 10 74 Not recovered   Cataclasite
19R-1A, 71–94 89.810 90.04 11, 12, 13, 14 75 Not recovered   Troctolite
20R-1A, 0–20 94.100 94.30 1, 2, 3 75 Not recovered   Troctolite
21R-1A, 0–4 98.800 98.84 1 76 Not recovered   Cataclastic basalt
21R-1A, 5–16 98.850 98.96 2, 3 77 Not recovered   Completely altered chromitite
21R-1A, 17–132 98.970 100.12 4, 5, 6, 7, 8, 9,
10, 11, 12,
13, 14, 15,
16, 17		 78 Not recovered   Olivine gabbro
21R-2A, 0–31 100.115 100.43 1, 2, 3 78 Not recovered   Olivine gabbro
23R-1A, 0–4 101.800 101.84 1 79 Not recovered   Troctolite
23R-1A, 5–9 101.850 101.89 2 80 Not recovered   Troctolite
23R-1A, 10–13 101.900 101.93 3 81 Not recovered   Cataclastic, chilled margin–bearing basalt
23R-1A, 14–18 101.940 101.98 4 82 Not recovered   Troctolite
23R-1A, 19–34 101.990 102.14 5 83 Not recovered   Olivine gabbro
23R-1A, 35–37 102.150 102.17 6 84 Not recovered   Cataclastic olivine gabbro
23R-1A, 38–53 102.180 102.33 7, 8 85 Not recovered   Olivine gabbro
26R-1A, 0–15 103.800 103.95 1, 2 86 Modal Sharp to gradational Troctolite
26R-1A, 16–43 103.960 104.23 3, 4, 5, 6, 7 87 Not recovered   Cataclastic olivine gabbro
26R-1A, 44–58 104.240 104.38 8, 9, 10, 11 88 Not recovered   Troctolite
26R-1A, 59–61 104.390 104.41 12 89 Not recovered   Cataclastic olivine gabbro
26R-1A, 62–64 104.420 104.44 13 90 Not recovered   Olivine gabbro
26R-1A, 65–75 104.450 104.55 14, 15 91 Not recovered   Cataclastic olivine gabbro
Ghost core
Cluster 1		 Samples recovered
from the ghost core;
contains rocks from
Units I and II,
excludes rocks from
Unit III		 6G-1A, 0–0.6 29.000 29.05 1 G5 Not recovered   Clinopyroxene oikocryst-bearing olivine gabbro
6G-1A, 5–8 29.045 29.08 2 G6 Not recovered   Olivine gabbro
6G-1A, 8–11 29.075 29.11 3 G7 Not recovered   Clinopyroxene oikocryst-bearing troctolite
6G-1A, 11–15 29.110 29.15 4 G8 Not recovered   Clinopyroxene oikocryst-bearing troctolite
6G-1A, 15–22 29.145 29.22 5 G9 Not recovered   Clinopyroxene oikocryst-bearing troctolite
6G-1A, 22–25 29.220 29.25 6 G10 Not recovered   Cataclastic gabbro
6G-1A, 25–31 29.250 29.31 7 G11 Not recovered   Olivine-bearing gabbro
6G-1A, 31–35 29.305 29.35 8 G12 Not recovered   Olivine-bearing gabbro
6G-1A, 35–38 29.345 29.38 9 G13 Not recovered   Clinopyroxene oikocryst-bearing olivine gabbro
6G-1A, 38–42 29.380 29.42 10 G14 Not recovered   Clinopyroxene oikocryst-bearing olivine gabbro
6G-1A, 42–45 29.420 29.45 11 G15 Not recovered   Clinopyroxene oikocryst-bearing troctolite
7G-1A, 0–4.5 29.000 29.05 1 G16 Not recovered   Olivine-bearing gabbro
7G-1A, 4.5–9 29.045 29.09 2 G17 Not recovered   Olivine-bearing gabbro
7G-1A, 9–17 29.090 29.17 3 G18 Not recovered   Clinopyroxene oikocryst-bearing troctolite
7G-1A, 17–26 29.170 29.26 4 G19 Not recovered   Olivine-bearing gabbro
7G-1A, 26–30 29.260 29.30 5 G20 Not recovered   Olivine-bearing gabbro
7G-1A, 30–34.5 29.300 29.35 6 G21 Not recovered   Clinopyroxene oikocryst-bearing troctolite
7G-1A, 34.5–42 29.345 29.42 7 G22 Modal and textural Sharp Olivine gabbro
7G-1A, 42–49 29.420 29.49 8 G23 Not recovered   Olivine gabbro
7G-1A, 49–57 29.490 29.57 9 G24 Not recovered   Clinopyroxene oikocryst-bearing troctolite
7G-1A, 57–64.5 29.570 29.65 10 G25 Not recovered   Clinopyroxene oikocryst-bearing troctolite
7G-1A, 64.5–70.5 29.645 29.71 10 G26 Not recovered   Clinopyroxene oikocryst-bearing troctolite
7G-1A, 70.5–76 29.705 29.76 11 G27 Not recovered   Cataclastic gabbro
7G-1A, 76–80 29.760 29.80 12 G28 Not recovered   Olivine-bearing gabbro
7G-1A, 80–91 29.800 29.91 13 G29 Not recovered   Oikocryst gabbro
7G-1A, 91–97 29.910 29.97 14 G30 Not recovered   Clinopyroxene oikocryst-bearing troctolite
7G-1A, 97–107 29.970 30.07 15 G31 Not recovered   Clinopyroxene oikocryst-bearing troctolite
7G-1A, 107–125 30.070 30.25 16 G32 Not recovered   Clinopyroxene oikocryst-bearing troctolite
7G-1A, 125–137 30.250 30.25 17 G33 Not recovered   Clinopyroxene oikocryst-bearing troctolite
7G-1A, 137–146 30.370 30.46 18 G34 Not recovered   Olivine-bearing gabbro
7G-2, 0–10 30.460 30.56 1 G35 Not recovered   Clinopyroxene oikocryst-bearing troctolite
7G-2, 10–17 30.555 30.63 2 G36 Not recovered   Clinopyroxene oikocryst-bearing troctolite
7G-2, 17–26 30.630 30.72 3 G37 Not recovered   Clinopyroxene oikocryst-bearing troctolite
7G-2, 26–31 30.720 30.77 4 G38 Not recovered   Olivine-bearing gabbro
7G-2, 31–39 30.770 30.85 5 G39 Not recovered   Clinopyroxene oikocryst-bearing troctolite
7G-2, 39–51 30.850 30.97 6 G40 Not recovered   Clinopyroxene oikocryst-bearing troctolite
7G-2, 51–59 30.970 31.05 7 G41 Not recovered   Clinopyroxene oikocryst-bearing troctolite
15G-1A, 0–6 79.400 79.46 1 G46 Not recovered   Clinopyroxene oikocryst-bearing troctolite
15G-1A, 7–19 79.470 79.59 2 G47 Not recovered   Clinopyroxene oikocryst-bearing troctolite
15G-1A, 20–28 79.600 79.68 3 G48 Not recovered   Olivine-bearing gabbro
15G-1A, 29–37 79.690 79.77 4 G49 Not recovered   Olivine-bearing gabbro
15G-1A, 38–42 79.780 79.82 5 G50 Not recovered   Olivine-bearing gabbro
15G-1A, 43–51 79.830 79.91 6 G51 Not recovered   Clinopyroxene oikocryst-bearing troctolite
15G-1A, 52–57 79.920 79.97 7 G52 Not recovered   Olivine gabbro
15G-1A, 58–65 79.980 80.05 8 G53 Not recovered   Olivine gabbro
15G-1A, 66–69 80.060 80.09 9 G54 Not recovered   Oikocryst gabbro
Ghost core
Cluster 2		 Samples recovered
from the ghost core;
contains rocks from
all three units		 14G-1A, 0–7 79.400 79.47 1 G42 Not recovered   Cataclastic olivine gabbro
14G-1A, 8–14 79.480 79.54 2 G43 Not recovered   Olivine gabbro
14G-1A, 15–19 79.550 79.59 3 G44 Not recovered   Olivine gabbro
14G-1A, 20–25 79.600 79.65 4 G45 Not recovered   Troctolite
17G-1A, 0–8 84.400 84.48 1 G55 Not recovered   Cataclastic olivine gabbro
17G-1A, 9–12 84.490 84.52 2 G56 Not recovered   Aphyric basalt
22G-1A, 0–3 101.800 101.83 1 G57 Not recovered   Completely altered chromitite
22G-1A, 4–12 101.840 101.92 2 G58 Not recovered   Olivine gabbro
24G-1A, 0–6 103.800 103.86 1 G59 Not recovered   Olivine-moderately phyric basalt
24G-1A, 7–9 103.870 103.89 2 G60 Not recovered   Cataclastic olivine gabbro
24G-1A, 10–13 103.900 103.93 3 G61 Not recovered   Cataclastic olivine gabbro
24G-1A, 14–16 103.940 103.96 4 G62 Not recovered   Troctolite
24G-1A, 17–21 103.970 104.01 5 G63 Not recovered   Troctolite
24G-1A, 22–27 104.020 104.07 6 G64 Not recovered   Cataclastic basalt
25G-1A, 0–7 103.800 103.87 1 G65 Not recovered   Olivine-bearing gabbro
25G-1A, 8–17 103.880 103.97 2 G66 Not recovered   Olivine gabbro
25G-1A, 18–27 103.980 104.07 3 G67 Not recovered   Troctolite
25G-1A, 28–30 104.080 104.10 4 G68 Not recovered   Olivine gabbro
25G-1A, 31–38 104.110 104.18 5 G69 Modal and textural   Olivine gabbro
25G-1A, 39–42 104.190 104.22 6 G70 Not recovered   Recovered cement
25G-1A, 43–47 104.230 104.27 7 G71 Not recovered   Recovered cement
25G-1A, 48–57 104.280 104.37 8 G72 Not recovered   Cataclastic olivine gabbro

Pieces 1–4 from Section 345-U1415J-23R-1A are regarded as representing rubble from an upper part of the hole that fell into the borehole during cleaning operations.

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