Table T6. ICP-AES analyses for the gabbro sill and Subunit 4B, Site 1253. 
Sample
Subunit
Depth (mbsf)
Major element contents (wt%)
Trace element concentrations (ppm)
SiO2
TiO2
Al2O3
Fe2O3
MgO
MnO
CaO
Na2O
K2O
P2O5
Total
LOI
Cr
Ni
Ba
Sr
V
Y
Zr
Sc
205-1253A-





















(B) 5R-4, 60-61 4A 405.21 48.25 2.05 14.61 12.79 6.96 0.18 12.86 2.52 0.29 0.26 100.76 0.69 235.19 84.33 91.77 224.83 318.73 30.89 146.35 41.83
(A) 5R-4, 60-61 4A 405.21 47.39 1.75 14.13 12.01 6.88 0.17 12.55 2.41 0.28 0.22 97.78 0.69 235.44 92.27 91.72 213.81 316.18 29.65 139.27 38.23
(A) 6R-3, 65-67 4A 406.91 49.22 2.00 14.33 12.73 7.23 0.18 12.82 2.61 0.25 0.20 101.57 0.63 266.12 92.20 71.82 231.86 330.65 31.51 149.30 41.90
(B) 6R-3, 65-67 4A 406.91 47.64 1.55 13.79 12.14 7.09 0.17 12.49 2.44 0.23 0.21 97.76 0.63 257.07 86.65 74.34 211.39 316.61 29.87 133.23 39.98
(A) 6R-5, 38-39 4A 408.84 47.40 1.95 15.83 12.28 6.58 0.17 11.19 2.50 0.35 0.20 98.45 0.51 214.03 64.02 86.14 213.76 319.97 30.88 153.12 40.52
(B) 6R-5, 38-39 4A 408.84 47.16 1.91 15.94 11.89 6.13 0.16 11.18 2.38 0.34 0.25 97.34 0.51 218.26 59.52 81.33 205.69 301.92 26.30 150.62 42.65
(A) 6R-6, 89-90 4A 410.74 49.15 2.11 14.80 12.95 7.35 0.18 12.36 2.54 0.38 0.30 102.12 1.23 224.07 93.85 76.46 210.79 328.99 31.05 152.15 42.96
(A) 7R-1, 130-131 4A 414.60 47.67 2.58 13.46 14.06 6.65 0.18 11.10 2.95 0.25 0.25 99.14 0.81 35.56 53.97 125.34 232.30 389.80 40.05 182.97 43.03
(B) 7R-1, 130-131 4A 414.60 46.96 2.48 12.90 13.63 6.47 0.18 10.65 2.85 0.24 0.23 96.59 0.81 36.11 60.74 122.91 222.16 377.94 37.11 173.62 40.33
(A) 8R-1, 68-69 4A 416.68 47.66 2.74 14.34 14.57 6.48 0.20 10.19 2.78 0.39 0.42 99.77 0.70 30.35 32.27 117.99 204.81 448.50 38.14 185.82 44.57
(B) 8R-1, 68-69 4A 416.68 47.12 2.74 14.34 16.12 6.30 0.19 10.14 2.72 0.38 0.84 100.89 0.70 30.87 35.54 113.84 202.52 447.39 37.81 185.26 57.15
(A) 8R-2, 75-76 4A 418.13 48.64 2.29 14.28 12.87 7.78 0.19 10.88 2.44 0.31 0.18 99.86 1.32 75.67 95.58 80.35 194.58 370.00 31.43 145.76 49.52
(B) 8R-2, 75-76 4A 418.13 46.99 2.20 14.11 12.69 7.58 0.18 10.63 2.39 0.30 — 97.07 1.32 67.38 149.70 81.20 191.97 355.40 30.67 144.24 41.17
(A) 9R-2, 35-37 4A 424.21 46.64 1.87 15.13 12.24 7.00 0.17 10.89 2.27 0.46 0.28 96.94 1.39 262.38 80.49 89.13 195.30 309.80 29.07 132.85 40.58
(B) 9R-2, 35-37 4A 424.21 46.17 1.86 15.92 11.54 7.25 0.17 10.79 2.22 0.45 0.06 96.45 1.39 255.25 55.10 88.39 187.75 304.54 29.55 130.04 40.41
(A) 14R-2, 60-61 4B 462.13 48.02 1.26 15.92 11.35 8.41 0.17 13.93 2.05 0.14 0.11 101.35 1.84 365.14 131.69 16.77 155.66 295.16 20.88 64.63 42.64
(B) 14R-2, 60-61 4B 462.13 47.83 1.23 15.40 11.09 8.47 0.17 13.92 2.03 0.14 0.06 100.35 1.84 370.44 119.49 17.02 152.35 300.00 19.85 65.31 42.56
(A) 16R-3, 30-31 4B 474.03 46.81 1.11 17.59 10.11 7.87 0.16 11.96 2.10 0.15 0.06 97.92 1.91 340.02 57.82 35.05 145.25 277.49 19.84 70.99 40.84
(B) 16R-3, 30-31 4B 474.03 46.60 1.10 17.34 11.62 8.14 0.16 11.77 2.00 0.15 0.12 99.00 1.91 377.29 167.42 34.89 143.85 293.11 18.79 68.62 43.20
(A) 17R-3, 44-45 4B 478.90 47.55 1.20 18.14 10.29 6.95 0.16 12.86 2.14 0.10 0.25 99.66 1.62 343.78 70.67 26.48 164.45 311.18 22.57 71.33 43.02
(B) 17R-3, 44-45 4B 478.90 47.26 1.18 17.85 10.54 6.37 0.15 12.72 2.12 0.10 — 98.28 1.62 336.23 111.36 23.67 160.93 295.57 20.26 68.19 39.41
(A) 17R-3, 48-49 4B 478.94 46.30 2.81 13.62 16.22 6.47 0.21 9.68 3.24 0.29 0.26 99.09 1.11 21.00 45.21 71.02 186.87 521.33 42.01 158.23 42.95
(B) 17R-3, 48-49 4B 478.94 46.50 2.68 13.40 15.49 6.30 0.21 9.54 3.14 0.27 0.30 97.84 1.11 18.06 21.07 73.32 187.40 502.39 41.77 156.28 43.97
(A) 18R-1, 77-78 4B 481.27 47.74 1.65 14.39 13.25 6.71 0.18 12.14 2.62 0.17 0.16 99.02 1.69 56.74 83.29 44.80 174.94 351.67 31.63 101.12 43.22
(B) 18R-1, 77-78 4B 481.27 47.59 1.56 14.47 13.06 6.69 0.17 12.17 2.62 0.18 0.06 98.57 1.69 53.16 80.43 45.09 170.20 343.55 30.08 100.42 42.83
(A) 18R-4, 77-78 4B 484.90 48.23 1.27 16.02 11.81 8.07 0.17 14.19 2.08 0.21 0.13 102.19 1.72 353.50 112.09 29.10 157.81 310.25 21.68 72.10 43.05
(B) 18R-4, 77-78 4B 484.90 48.57 1.24 15.61 11.80 8.08 0.17 14.11 2.07 0.21 0.09 101.96 1.72 346.58 120.38 28.31 154.49 309.26 20.92 70.58 43.02
(A) 20R-1, 59-60 4B 490.69 46.77 1.14 15.03 11.25 8.26 0.17 13.70 1.82 0.16 0.06 98.35 2.54 398.03 147.15 22.11 141.84 276.39 18.08 57.21 39.50
(B) 20R-1, 59-60 4B 490.69 46.10 1.10 15.04 10.99 8.12 0.16 13.44 1.78 0.16 0.09 96.98 2.54 374.64 134.68 20.99 139.47 275.06 17.49 57.79 39.07
(A) 22R-1, 46-47 4B 493.76 48.66 1.12 15.93 11.41 8.35 0.17 14.23 1.91 0.17 0.09 102.04 1.76 429.44 127.20 30.43 152.52 279.47 19.84 61.61 41.62
(B) 22R-1, 46-47 4B 493.76 47.27 1.05 15.51 11.06 8.07 0.17 13.85 1.86 0.18 0.08 99.10 1.76 411.56 125.33 29.30 144.48 279.92 18.65 60.29 41.60
(A) 25R-1, 33-36 4B 513.33 47.71 1.52 17.48 11.89 7.55 0.19 11.39 2.38 0.27 0.14 100.53 3.16 242.51 66.43 77.79 177.51 335.73 25.20 101.23 43.55
(B) 25R-1, 33-36 4B 513.33 47.60 1.51 17.09 12.20 7.78 0.19 11.40 2.26 0.32 — 100.35 3.16 210.55 — 76.75 179.02 347.72 24.03 98.26 44.14
(A) 25R-1, 99-101 4B 513.99 47.23 1.54 16.48 12.18 7.96 0.20 11.20 2.47 0.28 0.16 99.70 3.15 201.80 45.73 101.77 189.06 337.73 28.31 102.67 42.81
(B) 25R-1, 99-101 4B 513.99 46.85 1.53 16.42 12.56 7.72 0.20 11.01 2.38 0.27 — 98.93 3.15 173.64 350.73 100.65 187.30 346.43 29.46 101.29 51.66
(A) 25R-2, 3-5 4B 514.28 47.33 1.55 16.97 11.43 7.46 0.18 11.68 2.42 0.21 0.22 99.47 2.89 219.07 80.56 77.09 182.88 352.91 25.62 97.08 45.39
(B) 25R-2, 3-5 4B 514.28 47.44 1.52 16.84 12.28 7.48 0.18 11.71 2.36 0.20 0.39 100.38 2.89 243.10 56.60 76.46 174.53 347.08 25.23 99.33 39.13
(A) 25R-2, 28-30 4B 514.53 47.53 1.59 16.63 12.02 6.93 0.17 11.40 2.35 0.18 0.16 98.97 2.63 165.75 64.84 67.95 174.77 350.84 24.46 107.57 36.76
(B) 25R-2, 28-30 4B 514.53 47.60 1.58 16.61 10.76 6.91 0.18 11.61 2.33 0.17 0.74 98.48 2.63 145.42 — 70.80 174.71 350.14 28.02 103.07 38.28
(A) 31R-4, 67-68 4B 543.41 47.67 1.62 15.06 12.58 6.42 0.18 12.53 2.29 0.16 0.14 98.65 0.75 141.99 85.39 45.86 160.77 328.53 27.06 100.23 41.97
(B) 32R-3, 29-30 4B 546.04 47.26 1.43 14.81 11.36 6.62 0.17 13.30 2.03 0.20 0.12 97.30 0.71 259.49 101.07 37.98 159.92 317.09 22.86 85.68 43.18
(A) 33R-1, 118-119 4B 550.38 48.81 1.43 15.83 10.61 7.10 0.16 14.06 2.22 0.19 0.05 100.46 1.14 369.84 106.37 38.82 175.94 336.58 23.87 85.21 45.95
(B) 33R-1, 118-119 4B 550.38 50.13 1.31 15.38 10.57 6.97 0.16 13.97 2.16 0.19 0.11 100.96 1.14 341.27 26.45 44.06 173.67 327.13 23.99 83.66 47.52
(A) 33R-2, 119-120 4B 551.89 47.33 1.36 16.75 11.46 7.22 0.17 12.34 2.04 0.20 0.20 99.08 0.44 296.92 57.12 44.27 164.81 312.50 24.88 91.21 44.28
(A) 33R-3, 46-47 4B 552.66 47.93 1.36 17.47 11.00 7.08 0.17 12.25 2.11 0.19 0.18 99.74 0.80 263.67 87.72 38.09 169.49 316.53 25.14 85.45 42.71
(B) 33R-3, 46-47 4B 552.66 47.09 1.32 17.00 10.97 6.85 0.17 12.20 2.02 0.20 — 97.82 0.80 242.33 — 52.44 166.60 307.15 24.93 87.66 36.62
(A) 35R-1, 97-98 4B 558.87 46.22 1.41 16.28 11.49 6.98 0.18 11.75 2.03 0.21 0.18 96.72 1.05 272.24 58.57 36.16 160.85 319.54 24.13 92.30 43.22
(B) 35R-1, 97-98 4B 558.87 46.73 1.41 16.13 12.24 6.78 0.17 11.83 1.96 0.21 0.34 97.83 1.05 251.43 334.26 46.02 160.81 321.98 22.54 92.56 48.28
(A) 35R-2, 119-120 4B 560.35 49.21 1.40 15.46 12.03 6.73 0.17 13.82 2.15 0.12 0.15 101.25 0.78 224.83 94.28 37.41 174.30 319.41 24.16 83.56 42.99
(B) 35R-2,119-120 4B 560.35 47.64 1.56 15.61 11.98 6.73 0.17 13.81 2.14 0.13 0.13 99.90 0.78 216.59 96.04 36.79 177.21 318.09 24.29 89.53 42.57
(B) 36R-1, 114-115 4B 563.64 48.32 1.57 15.11 12.62 7.10 0.18 13.59 2.26 0.16 0.16 101.06 1.03 212.71 86.08 55.75 172.93 348.08 26.45 95.13 44.15
(A) 37R-1, 5-6 4B 566.05 46.86 1.65 14.87 11.61 6.77 0.17 12.78 2.29 0.14 0.21 97.36 1.73 214.33 89.41 43.48 177.23 360.37 29.39 91.28 45.67
(B) 37R-1, 5-6 4B 566.05 48.41 1.53 15.07 12.63 6.86 0.18 13.02 2.31 0.13 0.17 100.30 1.73 189.97 24.91 51.16 179.82 357.37 31.00 86.23 46.87
(A) 37R-1, 47-48 4B 566.47 48.94 1.60 15.10 11.99 7.21 0.16 12.38 2.68 0.36 0.16 100.59 1.56 276.42 34.61 160.72 206.50 354.61 28.34 100.44 46.10
(B) 37R-1, 47-48 4B 566.47 49.32 1.69 15.15 12.74 7.03 0.16 12.42 2.67 0.36 0.14 101.68 1.56 240.41 27.63 157.43 204.26 353.74 29.69 103.61 47.14
(A) 37R-1, 127-128 4B 567.27 48.55 1.55 15.20 12.25 7.47 0.17 12.30 2.41 0.17 0.14 100.21 2.04 264.02 32.83 107.34 178.37 335.78 27.16 92.55 43.51
(B) 37R-1, 127-128 4B 567.27 47.33 1.37 14.97 12.01 7.31 0.17 11.93 2.37 0.18 0.08 97.72 2.04 246.50 29.45 105.64 174.81 328.84 25.59 89.00 44.44
(A) 37R-2, 49-50 4B 567.90 49.11 1.60 15.38 12.43 7.34 0.18 12.79 2.38 0.16 0.12 101.49 1.66 293.77 27.17 51.49 177.22 338.23 28.23 93.03 45.64
(B) 37R-2, 49-50 4B 567.90 48.68 1.49 15.01 12.70 7.25 0.17 12.91 2.35 0.16 0.12 100.85 1.66 318.76 27.51 53.92 176.83 332.38 26.56 96.61 46.54
(B) 38R-1, 89-90 4B 573.09 46.49 1.39 14.83 11.67 6.90 0.18 12.82 2.10 0.16 0.07 96.61 1.06 255.52 86.91 25.39 148.67 312.49 25.11 84.94 41.21
(B) 39R-1, 77-78 4B 577.97 46.64 1.43 14.47 11.82 6.65 0.18 13.03 2.10 0.19 0.09 96.60 0.31 247.78 92.77 39.49 150.45 309.47 25.44 82.66 41.35
(A) 42R-3, 33-34 4B 592.77 48.89 1.68 14.87 12.97 6.97 0.19 13.74 2.27 0.22 0.11 101.88 0.29 230.09 98.49 43.47 163.90 355.45 28.86 105.53 45.30
(B) 42R-3, 33-34 4B 592.77 48.80 1.57 14.02 12.22 6.64 0.18 13.35 2.25 0.22 0.14 99.40 0.29 226.42 87.57 40.86 159.78 349.12 26.53 92.20 45.53
(B) 43R-2, 116-117 4B 597.52 48.85 1.33 15.05 11.84 6.65 0.18 13.25 2.18 0.18 0.13 99.63 0.17 250.06 100.17 35.84 159.18 322.39 24.07 89.49 43.11

Notes: LOI = loss of ignition. A and B = replicate analyses of the same sample aliquot. — = not determined.