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Table T11. X-ray fluorescence analyses of major and trace elements for Site 1139 igneous units.

Hole: 1139A 1139A 1139A 1139A 1139A 1139A 1139A 1139A 1139A
Core, section: 51R-1 56R-3 57R-1 60R-2 61R-1 62R-2 64R-1 64R-4 65R-2
Interval (cm): 0-3 92-95 124-127 114-119 78-81 110-112 81-84 78-82 15-19
Piece:

21 15 1F 1 13B 3F 1A
Unit: 1 3 4 5 5 6 7 8 9
Rock type: Rhyolite Highly altered, crystal vitric tuff-breccia Sanidine-quartz phyric rhyolite Feldspar-phyric trachyte Feldspar-phyric trachyte Aphyric trachy
basalt		 Aphyric basaltic
trachyandesite		 Aphyric trachybasalt Aphyric trachybasalt
Depth (mbsf): 479.5 531.06 538.14 568.22 575.98 586.83 605.01 609.42 615.35
Major element oxides (wt%):







SiO2 73.45 69.51 79.58 67.10 66.56 50.57 53.59 49.09 50.17
TiO2 0.41 0.53 0.34 0.56 0.57 3.15 2.67 3.89 4.18
Al2O3 10.24 15.92 8.36 16.30 16.38 18.62 17.45 14.89 16.64
Fe2O3 6.03 5.24 3.67 5.36 4.37 16.99 10.60 14.14 13.43
MnO 0.07 0.06 0.06 0.22 0.27 0.16 0.30 0.26 0.28
MgO 0.10 4.21 0 0.05 0.08 1.36 1.09 4.33 2.34
CaO 0 0 0 0 0 2.55 5.85 7.67 6.41
Na2O 3.32 2.75 2.58 4.91 4.31 2.27 4.36 3.17 3.67
K2O 6.50 2.04 4.34 6.02 5.98 4.13 3.68 2.31 2.75
P2O5 0.03 0.00 0.00 0.01 0.00 1.50 1.09 1.05 1.44
Total 100.14 100.24 98.91 100.50 98.50 101.29 100.66 100.77 101.28
Mg#* 0.02 0.53 0 0.01 0.02 0.10 0.12 0.30 0.19
LOI** 0.93 5.66 0.17 1.73 2.04 3.73 4.38 2.69 4.38
CO2 1.2 7.3 0.7 2.6 1.8 4.2 5.8 3.5 5.3
H2O 1.1 7.2 0.6 0.6 0.0 4.2 1.4 1.9 1.7
Trace elements (ppm):                
Rb 221 22 139 93 70 47 47 34 41
Ba 49 40 66 79 75 791 1570 757 923
Sr 7 34 0 4 3 113 451 421 466
Nb 259 311 142 107 108 49 45 36 41
Zr 1678 213 903 629 388 343 367 292 332
Y 106 59 42 58 56 45 45 38 40
V 98 14 19 19 19 99 138 350 338
Cr 23 18 25 24 26 13 24 21 9
Ni 11 2 1 3 3 3 4 12 7
Cu                  
Zn 252 555 105 146 366 212 125 119 127
Normative mineralogy:                
Q 31.0 36.7 47.4 12.9 16.7 11.6 0.3   1.3
Or 38.5 12.0 26.0 35.5 35.9 24.4 21.7 13.7 16.2
Ab 16.6 23.7 19.1 41.3 37.1 19.2 36.9 26.9 31.1
An           2.8 17.2 19.7 20.7
Corundum   9.1   1.7 2.9 9.4      
Nepheline                  
Leucite                  
Acmite 3.5   2.2            
Na Metasilicate 1.8   0.2            
Wo (Di)             1.9 4.8 0.7
En (Di)             0.5 2.4 0.3
Fs (Di)             1.6 2.3 0.4
En (Hy) 0.2 10.6   0.2 0.2 3.4 2.2 7.8 5.5
Fs (Hy) 7.4 5.3 4.5 5.7 4.7 14.8 6.9 7.5 8.7
Ol (Fo)               0.4  
Ol (Fa)               0.5  
Ilmenite 0.8 1.0 0.6 1.1 1.1 6.0 5.1 7.4 7.9
Magnetite   1.5   1.6 1.3 4.9 3.1 4.1 3.9
Apatite           3.3 2.4 2.3 3.1
Total: 99.9 99.9 99.9 99.9 99.9 99.8 99.8 99.8 99.8

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