Table T11. Major and trace element data for basalt samples from Site 1137.

Hole: 1137A 1137A 1137A 1137A 1137A 1137A 1137A 1137A 1137A 1137A
Core, section: 25R-1 25R-3 25R-5 26R-1 26R-2 27R-4 28R-4 29R-2 29R-4 31R-4
Interval (cm): 106-108 89-93 113-115 143-146 5-7 64-66 28-30 35-38 15-17 48-51
Piece: 4 8C 11 12 1 6 5 1 4 1C
Unit: 1 1 2 2 2 3 3 3 4 4
Rock type: Plagioclase-phyric basalt Olivine-phyric basalt Aphyric basalt Microgabbro Aphyric basalt Plagioclase-phyric basalt Plagioclase-phyric basalt Aphyric basalt Plagioclase-phyric basalt Plagioclase-phyric basalt












Flow interior Chill base Chill top Xenolith Flow interior Silica filled vesicles Flow interior Chill base Altered Flow interior
Depth (mbsf): 229.46 232.11 234.99 239.43 239.53 252.56 257.17 258.81 261.55 270.98
Major element oxides (wt%):







SiO2 52.66 50.50 52.80 52.99 53.21 51.36 52.48 50.43 51.52 51.53
TiO2 2.42 2.50 2.54 1.84 2.52 2.56 2.51 2.66 2.18 2.18
Al2O3 14.58 15.72 14.79 15.18 14.25 14.83 14.32 15.36 15.89 16.77
Fe2O3 11.17 11.30 11.51 9.74 11.44 11.70 11.73 11.92 10.20 9.98
MnO 0.13 0.14 0.11 0.14 0.16 0.11 0.15 0.13 0.10 0.15
MgO 5.76 6.19 5.71 6.60 5.25 6.57 5.75 7.33 7.41 6.02
CaO 8.19 8.64 7.19 9.95 8.79 7.75 8.95 5.86 4.51 10.07
Na2O 2.47 2.74 2.84 2.36 2.61 2.60 2.39 2.92 2.59 2.48
K2O 1.38 1.10 1.96 0.81 1.15 1.27 0.83 2.16 3.31 0.54
P2O5 0.33 0.34 0.35 0.24 0.36 0.35 0.35 0.37 0.30 0.29
Total: 99.06 99.15 99.80 99.81 99.71 99.08 99.44 99.13 97.99 99.98
Total alkali: 3.85 3.84 4.80 3.17 3.76 3.87 3.22 5.08 5.90 3.02
LOI 2.19 0.64 1.21 0.07 0.71 1.84 1.13 0.92 3.32 1.13
Mg # 0.39 0.41 0.38 0.46 0.36 0.41 0.38 0.43 0.48 0.43
Trace elements (ppm):







Rb 12.0 14.4 22.0 10.0 17.5 17.7 12.0 13.8 54.2 8.8
Ba 314 338 353 283 380 316 352 335 214 221
Sr 549 547 486 575 531 529 553 485 461 601
Ce 44 47 49 35 48 53 52 58 41 41
Nb 15.8 16.5 17.5 12.1 17.4 17.6 17.1 18.7 14.3 14.5
Zr 213 227 239 163 239 236 233 243 192 185
Y 28 27 30 24 32 31 31 34 28 28
V 233 265 245 198 254 254 223 275 231 239
Cr 96 101 58 118 57 71 61 69 156 173
Ni 27 27 23 27 22 31 27 30 41 47
Cu 32 33 25 24 29 28 27 29 34 39
Zn 103 123 112 89 110 116 110 125 85 98
Normative mineralogy:







Q 6.2 1.9 4.2 5.6 7.0 3.6 7.2 0.0 0.0 4.4
Or 8.0 6.3 11.1 4.7 6.6 7.3 4.8 12.5 19.4 3.1
Ab 20.5 22.7 23.3 19.5 21.5 21.6 19.7 24.1 21.7 20.4
An 24.2 26.8 21.1 27.8 23.2 24.6 25.3 22.0 20.3 32.3
Cor 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 0.0
Wo (Di) 5.7 5.4 4.7 7.9 7.1 4.5 6.6 1.7 0.0 6.1
En (Di) 2.4 2.3 2.0 3.4 3.1 2.0 2.8 0.7 0.0 2.6
Fs (Di 1.7 1.5 1.5 1.9 2.4 1.2 2.1 0.3 0.0 1.6
En (Hy) 11.6 12.7 11.6 12.6 9.6 14.0 11.1 15.3 18.0 11.9
Fs (Hy) 8.0 8.2 8.3 7.0 7.5 8.9 8.2 7.6 8.6 7.1
Ol (Fo) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.2 0.2 0.0
Ol (Fa) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.8 0.3 0.0
Ilmenite 4.5 4.7 4.8 3.4 4.7 4.8 4.7 5.0 4.1 4.0
Magnetite 6.4 6.4 6.5 5.5 6.5 6.7 6.7 6.8 5.9 5.7
Apatite 0.7 0.7 0.7 0.5 0.8 0.7 0.7 0.8 0.6 0.6
Total: 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9

Notes: LOI = loss on ignition at 1025°C for 4 hr. Mg# = MgO/(MgO + FeO), mol%, with FeO calculated (as 80% of total Fe). Only a portion of this table appears here. The complete table is available in ASCII format.