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Table T3. Major and trace element analyses of representative volcaniclastic sediments.

Core, section,
interval (cm):		 310-M0008A-
4R-1,
22–28		 5R-1,
15–20		 7R-CC,
4–13		 8R-1,
42–51		 8R-1,
61–80		 9R-CC,
0–5		 10R-1,
27–30		 14R-1,
0–10		 14R-1,
24–28		 16R-1,
55–60		 16R-1,
115–120		 17R-1,
0–5		 17R-1,
10–15		 17R-1,
18–23
Description: Gray
sand/​silt		 Gray
sand/​silt		 Boulder 1 Boulder 2 Cobble Pebble Pebble Pebble Brown
sand/​silt		 Brown
sand/​silt		 Brown
clay/​sand		 Pebble Pebble Pebble
Major element oxide (wt%):
SiO2 32.79 29.86 42.15 42.68 42.32 41.01 37.80 44.03 41.44 38.90 31.37 43.59 45.15 47.06
TiO2 2.97 2.83 3.15 3.13 1.77 3.46 2.90 4.07 3.22 3.39 3.84 3.33 3.69 3.64
Al2O3 13.22 11.92 15.56 15.83 8.51 15.87 9.69 16.50 12.04 14.80 13.88 14.85 14.96 16.66
Fe2O3 13.02 12.13 12.16 12.26 10.84 12.38 12.90 10.33 15.78 16.05 16.59 12.18 11.68 11.39
MnO 0.15 0.14 0.16 0.17 0.17 0.18 0.17 0.13 0.16 0.21 0.36 0.15 0.16 0.16
MgO 9.99 9.67 4.98 6.04 16.76 4.33 14.22 3.07 4.96 5.15 2.95 5.59 4.48 5.08
CaO 7.63 9.12 9.58 9.98 12.02 8.96 9.12 8.89 1.36 1.60 1.44 9.37 7.63 9.98
K2O 0.81 0.71 1.21 1.07 0.44 1.45 0.95 2.01 0.73 0.76 0.84 1.48 2.04 1.81
P2O5 0.30 0.26 0.69 0.66 0.14 0.51 0.25 0.90 0.05 0.23 0.32 0.58 0.88 0.88
Trace element (ppm):
Sr 432 544 675 662 258 646 414 754 287 370 422 609 808 722
Ba 100 211 398 319 125 503 320 750 288 279 324 361 523 480
Rb 23.2 21.4 22.8 22.5 11.1 30.9 23.2 40.1 35.8 29.6 37.5 31.2 56.8 40.5
Cu 54.1 61.2 93.9 88.2 45.2 113 67.8 51.1 51.3 66.0 70.6 69.1 72.7 69.0
Ni 241 248 50.9 54.1 381 66.1 453 90.9 230 305 286 100 30.8 73.3
Zn 104 97.0 95.3 93.6 67.7 99.3 98.0 89.3 113 124 122 103 120 116
S 13,250 15,180 204 160 155 2,496 176 423 468 538 407 125 107 333
Cl 8,394 7,903 158 230 <2.0 5,305 737 4,873 10,210 9,140 8,032 293 163 327
Br 24.6 19.7 1.1 1.6 <1.4 10.3 <1.6 10.9 37.1 29.7 28.4 1.0 <1.7 <1.8

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