Geofluids / 2018 / Article / Tab 1

Research Article

Fluid Chemistry of Mid-Ocean Ridge Hydrothermal Vents: A Comparison between Numerical Modeling and Vent Geochemical Data

Table 1

Average MORB and seawater compositions integrated in the calculations of this study.

Average MORB composition1Seawater composition2
wt%Solution (mol/kg)

SiO250.43Na+0.469
TiO21.49Mg2+0.0528
Al2O315.37Ca2+0.0104
FeO8.95K+0.0102
Fe2O31.84Cl0.5467
MgO7.58SO42−0.0282
CaO11.53HCO30.0017
Na2O2.54CO32−2.4 × 10−4
K2O0.14F6.8 × 10−5
S0.13OH1.09 × 10−4
Fe3+/ΣFe0.1563CO29.5 × 10−6
H2O53.5565
pH8.1

1Average composition of eight MORB glasses from the East Pacific Rise, Mid-Atlantic Ridge, Galapagos Spreading Center, and Juan de Fuca Ridge (data after Kelley and Cottrell [55] and reference therein). 2Seawater composition modified from the reference composition of Millero et al. [56], defined at  = 25°C,  = 1 atm, and a salinity of 35 g/kg.

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