Table 1 |
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Chemistry of low temperature vent fluid sample from Franklin Seamount, Woodlark Basin. All data from Binns et al.5 |
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|
Vent fluid |
Ambient seawater |
|
|
|
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|
T/°C |
20–30 |
2.1 |
|
pH |
6.26 |
7.57 |
|
Alkalinity/u equiv l-1 |
3.08 |
2.86–2.91 |
|
Conc./mM kg-1 |
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|
Mg |
51.96 |
52.66–52.99 |
|
Ca |
10.47 |
9.85–9.87 |
|
Si |
0.33 |
0.117–0.118 |
|
Li |
0.036 |
0.026 |
|
Mn |
0.010 |
2.5 × 10-6-4.5 × 10-6 |
|
Fe |
0.038 |
4 × 10-6 |
|
Cl |
532.9 |
530–531 |
|
H2S |
NDa |
ND |
|
NO3 |
23.8 |
35.8–37.7 |
|
NO2 |
<0.1 |
ND |
|
NH4 |
7.5 |
ND |
|
PO4 |
0.78 |
2.6–2.9 |
|
Conc./μM kg-1 |
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|
Ni |
0.014 |
0.006 |
|
Cu |
0.78 |
0.012–0.046 |
|
Zn |
0.38 |
ND |
|
Conc./nM kg-1 |
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|
Ag |
0.23 |
0.09–0.18 |
|
Pb |
1.2 |
0.38–0.48 |
|
|
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|
aND, not determined. |
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|
Boyd and Scott Geochemical Transactions 2001 2:45 doi:10.1186/1467-4866-2-45 |
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