Table 3
Major element chemistry of volcanic rocks of the Povorotny Cape

NN Sample SiO2 TiO2 Al2O3 Fe2O3 FeO MnO MgO CaO Na2O K2O P2O5 H2O CO2 LOI Total
1 M97-12/30 41.66 3.71 11.79 9.12 11.27 0.36 6.14 9.14 2.38 0.59 0.4 - - 3.13 99.69
2 M-97-9/2 47.75 1.98 13.18 4.17 9.07 0.19 6.5 9.13 3.68 0.3 0.16 - - 6.1 102.21
3 2311 48.75 2.31 13.27 9.19 6.31 0.19 7.69 5.97 3.55 0.48 0.25 2.8 0.08 - 100.84
4 M-97-19/2 49.98 1.32 14.07 4.96 7.52 0.08 6.16 7.87 4.6 0.25 0.2 - - 2.42 99.43
5 2328/3 50.24 2.73 13.39 4.86 5.78 0.31 6.15 9.75 3.78 1.18 0.21 - - 1.67 100.05
6 2329/12 50.27 1.32 12.32 4.93 8.65 0.21 7.2 8.11 4.55 0.16 0.06 - - - 97.78
7 2333/27 45.2 2.8 15.55 3.02 9.34 0.14 9.71 4.39 3.27 0.24 0.4 4.68 1.19 - 99.93
8 2333/16 49.91 1.87 18.82 6.44 2.99 0.07 4.44 4.23 5.79 1.34 0.61 - - - 96.51
9 2333/31 49.32 1 13.66 2.78 8.29 0.1 7.68 8.87 4.04 0.12 0.03 - - - 95.89
10 2333/19 48.32 1.12 13.58 2.59 9.94 0.07 8.4 8.08 3.37 0.46 0.02 - - - 95.95
11 M-97-19/10 55.81 0.94 14.53 4.5 6.05 0.08 6.72 2.86 4.22 0.38 0.16 - - 3.28 99.53
12 M-97-19/12 51.77 0.29 14.67 3.16 4.73 0.15 8.21 8.22 4.64 0.06 0.05 - - 3.52 99.47
13 M-97-19/15 50.81 0.66 14.9 3.35 6.32 0.2 9.74 5.03 3.71 0.82 0.07 - - 3.89 99.50
14 M-97-20/6 40.48 0.38 17.72 3.57 5.81 0.29 10.02 9 2.3 2.01 0.05 - - 7.71 99.34
15 M-97-20/7 49.28 0.82 16.22 6.69 5.79 0.28 7.75 3.57 4.88 0.64 0.15 - - 3.47 99.54
16 2331/3 51.17 0.41 16.5 1.83 5.28 0.13 8.48 8.77 4.11 0.06 0.05 - 0.24 3.6 100.63
17 M-97-17/10 46.04 0.76 14.94 4.6 7.25 0.19 9.04 9.47 3.19 0.54 0.07 - - 3.4 99.49
18 M-97-17/15 46.24 0.81 14.26 4.07 7.98 0.19 9.52 9.34 3.26 0.08 0.07 - - 3.63 99.45
19 M97-11/10 56.28 0.29 15.16 3.51 4.09 0.14 8.24 2.88 6.41 0.24 0.05 - - 2.37 99.66
20 9416/2 54.75 0.4 13.7 2.03 5.21 0.18 7.94 8.53 4.6 0.11 0.01 - - 2.92 100.38
21 9411/4 50.85 0.35 10.12 3.04 4.31 0.2 11.35 12.9 0.33 0.05 0.02 - - 6.13 99.65
22 9411/9 57.46 0.37 14.08 1.36 4.31 0.16 7.97 4.94 4.91 0.38 0.02 - - 3.63 99.59
23 9425/2 59.22 0.23 13.6 - 6.26 0.15 6.41 8.9 4.1 0.2 0.04 - - 1.17 100.28
24 M-95-34/10 50.97 1.51 11.12 2.44 6.52 0.08 10.4 8.92 3.5 0.47 0.16 0.3 - 3.36 99.75
25 c-2320 47.09 2.55 13.16 4.55 9.11 0.42 7.19 8.12 2.53 0.55 0.09 - - - 95.36
26 9411/16 48.5 2.13 13.9 2.79 9.7 0.19 4.96 9.53 4.81 0.14 0.1 - - 3.03 99.78
27 9406/11 55.34 1.23 17.29 0.73 6.18 0.17 3.65 5.12 4.49 1.67 0.27 2.55 0.05 - 98.74
28 9420/2 56.5 1.01 16.85 0.2 7.47 0.19 3.16 3.52 5.5 0.47 0.19 1.86 2.9 - 99.82

Remarks to Tables 3, 3a, b
Ordering numbers corresponding to following volcanic rock groups: 1-6 - the first group (N-MORB); 7-8 - second group (within-plate basalts); 9-18 - third group (low-K tholeiites and boninites); 19-23 - fourth group (boninites); 24-28 - fifth group (evolved tholeiites).