AVERAGES OF ALL ANDESITE ARCS (Click here to go back)                      
El. SiO2 Al2O3 TiO2 Fe2O3 FeOT MnO MgO CaO Na2O K2O P2O5 LOI La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Li Be B Sc V Cr Co Ni Cu Zn Ga As Rb Sr Y Zr Nb Mo Sn Sb Cs Ba Hf Ta W Pb Th U Nd143/144 Sr87/86 Pb206/4 Pb207/4 Pb208/4 N
Less-Antilles 54.82 16.72 0.776 0 7.77 0.173 5.56 8.43 3.841 0.847 0.219 1.500 10.11 20.65 2.063 12.05 3.069 0.980 3.203 0.477 3.746 0.566 1.971 0.244 2.368 0.454 9.94       219.4 227.6 28.83 93.77 63.61 70.81 16.02   21.12 360.27 22.19 83.72 5.05 0     0.852 232.2 2.153 0.256 0 4.75 3.114 1.035 0.5130 0.7050 19.212 15.698 38.875 1052
Cent.Amer 53.05 15.87 1.089 0 8.75 0.174 5.50 9.02 2.982 1.065 0.192 1.267 15.67 27.28 2.392 15.83 3.724 1.216 6.531 0.664 4.181 0.859 2.402 0.352 2.176 0.330 7.34 0.78 12.83   281.1 165.1 34.93 90.27 107.43 88.05     25.74 413.06 24.00 94.66 8.29 0.8     0.701 552.8 2.265 0.514 0.27 2.01 2.199 0.879 0.5130 0.7039 18.976 15.554 38.612 532
Andes 59.43 16.67 0.903 0 6.00 0.116 3.62 6.11 3.571 2.323 0.243 0.917 26.45 55.12 6.709 26.34 5.366 1.290 4.453 0.691 3.999 0.68 2.374 0.279 2.116 0.306 27.46 34.80 29.69 15.83 142.1 87.2 21.99 40.47 36.88 86.33 19.36 7.9 89.34 484.70 22.11 160.89 10.26 0.2     5.79 520.8 4.734 1.176 6.55 13.87 10.027 3.571 0.5130 0.7059 18.513 16.113 38.227 1597
Honshu Arc 57.84 16.73 0.928 0 7.18 0.149 4.24 7.01 3.134 1.633 0.244 2.210 20.44 41.92 2.707 23.87 4.623 2.421 3.867 0.706 3.832 0.675 2.145 0.287 2.497 0.389 7.65 0.48 78.14 21.26 192.9 110.8 24.97 62.64 35.17 74.76 18.40 3.8 56.76 395.28 25.46 139.39 12.22       1.565 468.2 3.194 1.267   12.20 6.413 0.827 0.5125 0.7061 18.367 15.571 38.502 3833
Mexican Arc 58.63 15.91 1.050 0 6.15 0.111 4.34 6.04 3.967 2.303 0.365 1.216 31.12 64.71 6.406 38.00 7.099 4.493 7.037 0.872 3.821 0.952 2.915 0.598 2.661 0.384 17.30 1.13 12.83 14.85 146.5 148.3 25.72 83.14 37.26 78.88 20.75 4.2 48.52 792.18 27.78 207.57 17.66 5.0 6.67 0.33 1.734 700.8 7.287 8.361 3.88 9.75 6.707 2.532 0.5126 0.7041 18.893 17.235 38.672 1154
Cascades 58.74 16.75 0.955 0 6.41 0.117 4.29 6.76 4.369 1.457 0.218 0.860 15.98 32.73 4.196 17.767 3.946 1.177 3.583 0.689 3.469 0.655 1.851 0.254 1.926 0.367 18.64 1.45   20.10 151.2 136.9 36.60 70.18 49.83 67.37 17.33   28.88 589.11 20.73 140.31 9.32     0.153 1.638 419.2 3.668 0.643   5.249 3.922 1.283 0.5129 0.7036 18.944 15.584 38.489 893
Aleutians 57.80 16.89 0.864 0 7.14 0.150 3.86 7.23 3.494 1.451 0.238 0.774 13.81 27.50 2.876 15.61 3.866 1.436 3.782 0.830 3.803 0.697 2.324 0.268 2.338 0.370   1.20 11.02   208.0 70.3 23.53 27.41 97.12 89.39 16.84 155.5 31.45 445.42 22.64 112.15 5.29 1.1 5.29 4.99 1.496 455.0 3.177 0.563 7.78 4.739 1.396 0.5140 0.7037 18.727 15.544 38.259 823
Kamchatka 55.80 16.51 0.980 0 7.58 0.152 5.03 7.68 3.457 1.353 0.259 0.778 11.81 27.36 3.718 16.60 4.219 1.405 3.863 0.617 3.541 0.701 2.049 0.293 2.008 0.298 10.18 0.82 15.96 26.20 219.8 188.7 29.91 60.11 65.68 77.75 16.85 2.68 23.85 440.12 21.88 121.02 5.12 1.3 0.52   0.691 437.6 4.492 0.510 0.10 7.01 1.941 0.825 0.5131 0.7033 18.283 15.484 37.949 608
Kuriles 58.24 16.48 0.849 0 6.92 0.144 3.80 6.89 3.341 1.411 0.190 1.826 11.82 28.43 4.106 12.50 6.135 1.152 4.783 0.750 4.842 1.034 3.095 0.447 2.934 0.440 7.56 0.59 15.17 28.44 205.8 78.3 23.06 45.24 113.14 89.02 14.53 1.90 33.11 331.93 24.22 126.94 3.80 0.9 1.41 0.18 2.447 363.5 2.866 0.355   4.92 3.531 1.267 0.5129 0.7035 18.352 15.518 38.208 988
Kyushu Arc 58.25 16.85 0.760 0 7.09 0.133 3.68 7.37 3.034 1.331 0.179 0.580 12.00 25.76 2.734 12.73 3.073 0.923 3.335 0.574 3.476 0.744 2.229 0.320 2.210 0.344 0.00 0.00 0.00 36.70 210.9 52.3 32.00 22.20 30.03 68.09 0.00 0.00 42.60 268.03 24.08 94.35 6.02       0.961 193.1 2.250 0.367   6.80 3.339 0.910 0.5127 0.7050 18.554 15.629 38.649 169
Indonesia 54.34 16.80 1.008 0 7.84 0.190 4.64 8.18 3.276 2.430 0.352 0.606 57.25 100.11 6.797 40.37 6.774 1.913 6.692 0.846 5.482 1.336 3.031 0.850 5.257 0.443   1.64 15.90 26.77 234.4 91.2 28.65 35.85 74.03 77.08 17.29   109.26 635.36 28.71 137.83 16.01   1.84 0.00 3.374 805.9 3.245 1.086   11.72 10.129 1.491 0.5106 0.7051 18.541 15.706 38.765 848
Izu Bonin 58.33 15.09 0.676 0 7.89 0.164 4.84 7.49 2.778 0.784 0.109 2.763 5.74 11.82 1.202 6.62 2.272 0.725 2.374 0.483 2.722 0.658 1.728 0.263 2.103 0.336 6.02 0.43 15.42 28.17 239.0 277.5 28.65 78.66 77.40 74.84 14.22   11.25 193.42 18.44 57.96 1.15 0.7   0.25 0.638 100.5 1.872 0.265 19.29 3.51 1.117 0.658 0.5094 0.7037 18.467 15.528 38.225 1356
Marianas 54.26 15.75 0.899 0 8.60 0.187 5.65 8.95 2.735 0.788 0.162 3.137 9.65 17.74 2.837 10.19 3.392 1.117 3.866 0.688 4.195 0.969 2.635 0.436 2.550 0.395 12.41   17.66 35.18 236.5 207.0 36.44 79.66 87.06 77.65 16.62   11.48 234.57 22.55 70.29 6.76 1.5   0.24 0.374 119.9 1.842 0.307   2.45 0.833 0.346 0.5130 0.7033 18.573 15.531 38.253 881
New Hebrides 52.62 15.84 0.747 0 9.45 0.185 6.44 9.83 2.773 1.179 0.221 0.344 10.09 21.70 2.835 14.85 2.976 1.034 5.160 0.507 3.521 0.623 2.028 0.267 2.790 0.299   0.435 6.89 32.87 294.6 183.3 34.79 65.10 139.86 82.61 18.60   18.16 522.86 20.00 66.10 2.71 0.6   0.13 0.238 282.2 3.626 0.097   4.81 1.279 0.494 0.5130 0.7041 18.437 15.527 38.331 267
Fiji-Lau Arc 54.92 17.44 0.976 0 7.49 0.352 4.30 8.51 3.143 1.532 0.280 2.252 11.85 24.96 2.681 17.27 4.529 1.515 3.334 0.758 3.789 0.864 2.421 0.286 2.715 0.465       25.03 202.1 91.3 26.09 41.57 53.41 77.66 17.94   27.48 419.83 33.14 104.21 6.27   1.28 0.28 1.312 268.6 2.418 0.437   5.23 1.400 0.625 0.5130 0.7036 18.797 15.558 38.467 312
Scotia Arc 54.09 16.00 1.072 0 8.87 0.175 6.24 8.90 3.108 0.519 0.159 3.029 6.45 15.82 1.892 9.96 2.859 0.985 3.353 0.558 3.852 0.775 2.370 0.347 2.347 0.344 13.76   8.50 35.77 241.4 197.3 34.74 129.74 106.42 80.60 15.32   11.29 184.31 24.76 94.31 4.41 0.3 1.88   0.257 121.6 2.117 0.324 0.00 4.21 1.144 0.339 0.5130 0.7036 18.561 15.597 38.441 373
Tongan Arc 55.87 15.76 0.594 0 8.92 0.177 4.95 10.21 1.904 0.459 0.115 0.077 2.259 5.574 0.855 4.519 1.459 0.758 1.827 0.350 2.161 0.482 1.432 0.222 1.556 0.245 5.14 0.26 4.07 42.03 309.47 76.73 38.58 30.14 121.08 101.54 16.33   6.74 197.74 15.05 32.39 1.70       0.243 117.9 0.950 0.042   3.49 0.26 0.178 0.5130 0.7037 18.701 15.567 38.346 122
                                                                                                                         
Av. Cont. Crust 56.30 16.36 0.890 0.00 7.650 0.17 4.76 7.92 3.23 1.345 0.22 1.42 16.03 32.30 3.35 17.36 4.08 1.44 4.18 0.65 3.79 0.78 2.29 0.35 2.50 0.37 11.03 3.39 17.43 27.80 219.72 140.58 29.97 62.13 76.20 80.14 16.03 25.14 35.12 406.36 23.40 108.48 7.18 1.13 2.70 0.73 1.43 362.34 3.07 0.97 4.3 6.46 3.65 1.10 0.5126 0.7042 18.641 15.703 38.428 929.88
                                                                                                                      Total= 15808