Research Article

Ferroan Dolomitization by Seawater Interaction with Mafic Igneous Dikes and Carbonate Host Rock at the Latemar Platform, Dolomites, Italy: Numerical Modeling of Spatial, Temporal, and Temperature Data

Table 2

Major component speciation of present-day and Triassic seawater at 25°C and 0.1 MPa.

Speciesmol/kg H2OpH

Present-day seawater
Ca+28.43
K+
Mg+2
Na+0.468
SiO2(aq)
Cl0.546
Fe+2
Al+3
HCO−3

Triassic seawater
Ca+28.10
K+
Mg+20.11
Na+0.48
SiO2(aq)
Cl0.73
Fe+2
Al+3
HCO−3

Fluid speciation was calculated in Arxim-LMA. For present-day seawater, input values from [21] were used. For Triassic seawater, Ca/Mg and metal concentrations were taken from [13]. Other values correspond to values from [22].