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Table T3. Major and trace element analyses of representative volcaniclastic sediments.
Core, section, Interval (cm):
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Major element oxide (wt%):
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SiO2
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32.79
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29.86
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42.15
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42.68
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42.32
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41.01
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37.80
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44.03
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41.44
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38.90
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31.37
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43.59
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45.15
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47.06
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TiO2
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2.97
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2.83
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3.15
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3.13
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1.77
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3.46
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2.90
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4.07
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3.22
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3.39
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3.84
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3.33
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3.69
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3.64
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Al2O3
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13.22
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11.92
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15.56
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15.83
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8.51
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15.87
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9.69
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16.50
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12.04
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14.80
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13.88
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14.85
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14.96
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16.66
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Fe2O3
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13.02
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12.13
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12.16
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12.26
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10.84
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12.38
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12.90
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10.33
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15.78
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16.05
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16.59
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12.18
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11.68
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11.39
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MnO
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0.15
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0.14
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0.16
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0.17
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0.17
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0.18
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0.17
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0.13
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0.16
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0.21
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0.36
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0.15
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0.16
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0.16
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MgO
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9.99
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9.67
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4.98
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6.04
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16.76
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4.33
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14.22
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3.07
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4.96
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5.15
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2.95
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5.59
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4.48
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5.08
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CaO
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7.63
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9.12
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9.58
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9.98
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12.02
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8.96
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9.12
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8.89
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1.36
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1.60
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1.44
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9.37
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7.63
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9.98
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K2O
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0.81
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0.71
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1.21
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1.07
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0.44
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1.45
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0.95
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2.01
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0.73
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0.76
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0.84
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1.48
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2.04
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1.81
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P2O5
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0.30
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0.26
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0.69
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0.66
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0.14
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0.51
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0.25
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0.90
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0.05
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0.23
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0.32
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0.58
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0.88
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0.88
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Trace element (ppm):
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Sr
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432
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544
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675
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662
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258
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646
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414
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754
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287
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370
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422
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609
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808
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722
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Ba
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100
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211
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398
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319
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125
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503
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320
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750
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288
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279
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324
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361
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523
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480
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Rb
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23.2
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21.4
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22.8
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22.5
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11.1
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30.9
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23.2
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40.1
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35.8
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29.6
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37.5
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31.2
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56.8
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40.5
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Cu
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54.1
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61.2
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93.9
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88.2
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45.2
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113
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67.8
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51.1
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51.3
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66.0
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70.6
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69.1
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72.7
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69.0
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Ni
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241
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248
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50.9
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54.1
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381
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66.1
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453
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90.9
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230
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305
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286
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100
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30.8
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73.3
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Zn
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104
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97.0
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95.3
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93.6
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67.7
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99.3
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98.0
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89.3
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113
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124
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122
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103
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120
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116
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S
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13,250
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15,180
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204
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160
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155
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2,496
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176
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423
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468
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538
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407
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125
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107
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333
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Cl
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8,394
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7,903
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158
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230
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< 2.0
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5,305
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737
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4,873
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10,210
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9,140
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8,032
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293
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163
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327
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Br
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24.6
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19.7
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1.1
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1.6
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< 1.4
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10.3
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< 1.6
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10.9
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37.1
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29.7
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28.4
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1.0
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< 1.7
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< 1.8
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