|
Core, section, interval (cm)
|
Depth (mbsf)
|
I
(µM)
|
B
(µM)
|
Cl
(mM)
|
I*
(mmol/m3)
|
B*
(mmol/m3)
|
|---|---|---|---|---|---|---|
| 195-1200D- | ||||||
| 1H-1, 120–130 | 1.20 | 63.0 | 914.0 | 543.4 | 27.4 | 398 |
| 1H-2, 120–130 | 2.70 | 162.0 | 1745.8 | 527.6 | 1.1 | 12 |
| 1H-3, 120–130 | 4.20 | 238.2 | 3031.4 | 535.0 | 4.8 | 61 |
| 1H-4, 120–130 | 5.70 | 294.6 | 3081.9 | 540.1 | 141.4 | 1479 |
| 1H-5, 10–20 | 6.10 | 308.2 | 3346.1 | 538.5 | 147.9 | 1606 |
| 2H-2, 88–98 | 9.28 | 274.7 | 3519.0 | 542.4 | 116.8 | 1492 |
| 9H-1, 80–90 | 28.80 | 667.4 | 2997.7 | 532.7 | 283.0 | 1271 |
| 195-1200E- | ||||||
| 2H-3, 123–133 | 10.33 | 678.2 | 3442.6 | 528.9 | 325.5 | 1652 |
| 5H-3, 51–61 | 20.62 | 804.2 | 3465.5 | 539.1 | 369.9 | 1594 |
| 7H-5, 30–40 | 32.20 | 762.2 | 3437.7 | 527.9 | 323.9 | 1461 |
| 10H-3, 62–72 | 56.02 | 565.3 | 3093.9 | 529.1 | 234.6 | 1284 |
| Representative concentrations | ||||||
| Seawater: | 0.44 | 420 | 550 | |||
| Mud volcanoes: | 340 | 2170 | 835 | |||
| Décollement fluids: | 35 | 3210 | 447 | |||
| Arc fumaroles: | 13 | 1795 | 395 | |||
Notes: Chloride concentrations from nearest corresponding pore fluid splits analyzed onboard (Salisbury, Shinohara, Richter, et al., 2002). * = calculated from measured concentrations (this study) and sediment porosity (Salisbury, Shinohara, Richter, et al., 2002). Seawater concentrations are from Broecker and Peng (1982). Nonserpentinite mud volcano fluids are from Aloisi et al. (2004). Décollement fluids are from the Nankai Trough (You et al., 1993; Kastner et al., 1993). High-temperature fumarolic condensate (885°C) is from Satsuma-Iwojima (Snyder et al., 2002; Goff and McMurtry, 2000).