Table 2 Analytical results of the Arima and Takarazuka hot spring waters and gases
From: Arima hot spring waters as a deep-seated brine from subducting slab
| Â | TW-1 [TG-1] | TW-2 | AW-1 [AG-1] | AW-2 | AW-3 | AW-4 | AW-5 [AG-5] | AW-6 | AW-7 | AW-8 | AW-9 | AW-10 | AW-11 | AW-12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Temperature (°C) | 22.3 | 25.9 | 32.1 | 19.1 | 95.3 | 88.3 | 80.3 | 88.3 | 61.5 | 33.3 | 19.4 | 19.5 | 29.2 | 32.2 |
pH | 6.20 | 6.47 | 6.23 | 5.30 | 6.42 | 6.65 | 6.89 | 6.38 | 6.51 | 6.04 | 5.78 | 6.51 | 5.64 | 6.00 |
EC (mS/cm) | 17.72 | 62.10 | 11.79 | 0.30 | 62.80 | 57.10 | 26.40 | 63.30 | 40.40 | 42.20 | 1.85 | 4.60 | 70.80 | 67.50 |
Depth (m) | 800 | 1,500 | nk | 40 | 240 | 187 | 165 | 206 | 170 | 800 | nk | nk | nk | nk |
δ 180SMOW (‰) | -0.35 | 1.09 | -7.00 | -7.88 | 2.07 | 0.77 | -4.09 | 2.22 | -1.85 | -3.26 | -7.27 | -7.08 | 4.98 | 3.61 |
δ DSMOW (‰) | -40.44 | -38.51 | -51.05 | -50.27 | -38.15 | -40.50 | -45.92 | -37.71 | -44.69 | -44.31 | -48.92 | -48.56 | -34.12 | -35.11 |
δ 13CPDB (‰) | -1.29 | -1.05 | -3.83 | -4.25 | 0.15 | -2.22 | -3.73 | -1.05 | -2.53 | -5.35 | -7.67 | -1.82 | -0.86 | -13.42 |
F (mg/L) | 0.00 | 1.22 | 1.99 | 0.60 | 0.99 | 0.88 | 1.47 | 1.39 | 1.30 | 1.00 | 0.29 | 0.93 | 0.00 | 0.00 |
C1 (mg/L) | 16,666 | 21,439 | 3,392 | 14 | 25,088 | 20,786 | 8,742 | 25,828 | 14,637 | 15,333 | 435 | 1,294 | 40,033 | 36,602 |
Br (mg/L) | 37.99 | 51.48 | 7.17 | 0.02 | 39.69 | 32.64 | 13.15 | 42.19 | 24.13 | 34.12 | 0.62 | 2.04 | 72.95 | 83.21 |
SO4 (mg/L) | 6.54 | 0.70 | 1.12 | 59.02 | 2.41 | 2.41 | 24.92 | 2.77 | 10.30 | 1.69 | 15.27 | 23.06 | 10.25 | 2.43 |
Li (mg/L) | 38.16 | 40.75 | 6.50 | 0.03 | 35.78 | 30.76 | 14.42 | 36.69 | 22.97 | 20.86 | 0.05 | 2.08 | 51.90 | 33.81 |
Na (mg/L) | 9,623 | 12,618 | 1,743 | 18 | 11,945 | 10,127 | 4,700 | 12,189 | 7,805 | 9,014 | 23 | 704 | 20,077 | 18,379 |
NH4 (mg/L) | 7.77 | 5.46 | 0.86 | 0.03 | 4.82 | 4.42 | 2.33 | 5.23 | 2.52 | 4.17 | 0.00 | 0.04 | 8.22 | 3.06 |
K (mg/L) | 959 | 1,372 | 208 | 3 | 2,525 | 2,153 | 1,000 | 2,593 | 1,388 | 332 | 4 | 131 | 1,930 | 112 |
Mg (mg/L) | 284 | 114 | 35 | 1 | 15 | 12 | 15 | 17 | 29 | 144 | 0 | 4 | 136 | 511 |
Ca (mg/L) | 629 | 985 | 491 | 23 | 2,192 | 1,845 | 627 | 2,356 | 1,283 | 860 | 8 | 108 | 3,006 | 2,598 |
HCO3 (mg/L) | 3,803 | 3,154 | 781 | 30 | 26 | 203 | 473 | 137 | 435 | 1,623 | 93 | 150 | 1,293 | 214 |
3He/4He (10-6) | 7.11 [8.92] | 5.46 | 8.98 [9.42] | 10.29 | 3.26 | 3.34 | 3.84 [10.51] | na | 6.73 | 5.07 | 7.62 | na | 6.69 | na |
3He/4He (Ra) | 5.08 [6.37] | 3.90 | 6.41 [6.73] | 7.35 | 2.33 | 2.38 | 2.75 [7.51] | na | 4.80 | 3.62 | 5.44 | na | 4.78 | na |
4He (10-8) | 13.87 [11.51] | 3.90 | 499.7 [646.9] | 191.10 | 1.77 | 2.52 | 4.08 [3.35] | na | 8.29 | 17.83 | 88.18 | na | 413.90 | na |
20Ne (10-7) | 0.79 [0.58] | 0.43 | 0.44 [2.83] | 0.18 | 0.42 | 0.67 | 0.98 [0.042] | na | 0.89 | 1.63 | 9.17 | na | na | na |
4He/20Ne | 1.75 [19.90] | 0.91 | 113.9 [228.3] | 106.15 | 0.43 | 0.38 | 0.42 [79.5] | na | 0.93 | 1.10 | 0.96 | na | na | na |
Sr (mg/L) | 20.23 | 43.34 | 8.28 | 0.12 | 43.39 | 37.08 | 11.09 | 41.01 | 28.88 | 48.32 | 0.76 | 0.77 | 80.35 | 93.94 |
87Sr/86Sr | 0.70926 | 0.70878 | 0.70854 | 0.70846 | 0.70853 | na | na | na | na | 0.70879 | 0.70866 | na | na | 0.70866 |