Table 4: Chemical composition of brines and brackish waters considered in the reactive transport simulations (chemical compositions taken from Hobbs et al. [19]).

Formational and boundary water compositions
(4)(5)

pH66666
(6)Ca1.50.770.20.196.2 × 10−4
(6)Mg6.5 × 10−34 × 10−28.6 × 10−310−28.2 × 10−4
(6)Cl64.156.243.612.9 × 10−3
(6)SO45.4 × 10−44 × 10−31.1 × 10−25.2 × 10−52.6 × 10−4
(6)K3.4 × 10−25.7 × 10−20.070.126.4 × 10−5
(6,7)TIC1.2 × 10−43.2 × 10−45.2 × 10−41.8 × 10−31.7 × 10−5
(6)Na2.852.495.7735.2 × 10−4
(6)Br9.7 × 10−37.4 × 10−35.6 × 10−34 × 10−5
(10)O2(aq)----1.0 (or 0.21)
(6)Fe(III)-----
(6)Al(III)-----

Chemical signatureCa-Na-ClNa-ClNa-ClNa-Cl-

(6)Ionic strength7.64.976.483.825.2 × 10−3

(8)TDS0.340.240.370.212 × 10−4

(9)Density1217115012041128997


Units G, Gw, Sand1, and Sand2; units Lim1, Sh1, and Dol1; unit Ev; (4)units Sh2, Sand3, Sand4, Sh3, Dol2, and Dol3; (5)meteoric water; (6)units in [mol l−1]; (7)total Inorganic Carbon; (8)units in [kg l−1]; (9)units in [kg m−3]; (10)partial pressure of O2(g) in atm.