Evaluation of the Potential for Dissolved Oxygen Ingress into Deep Sedimentary Basins during a Glaciation Event
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)
pH
6
6
6
6
6
(6)Ca
1.5
0.77
0.2
0.19
6.2 × 10−4
(6)Mg
6.5 × 10−3
4 × 10−2
8.6 × 10−3
10−2
8.2 × 10−4
(6)Cl
6
4.15
6.24
3.61
2.9 × 10−3
(6)SO4
5.4 × 10−4
4 × 10−3
1.1 × 10−2
5.2 × 10−5
2.6 × 10−4
(6)K
3.4 × 10−2
5.7 × 10−2
0.07
0.12
6.4 × 10−5
(6,7)TIC
1.2 × 10−4
3.2 × 10−4
5.2 × 10−4
1.8 × 10−3
1.7 × 10−5
(6)Na
2.85
2.49
5.77
3
5.2 × 10−4
(6)Br
9.7 × 10−3
7.4 × 10−3
5.6 × 10−3
4 × 10−5
(10)O2(aq)
-
-
-
-
1.0 (or 0.21)
(6)Fe(III)
-
-
-
-
-
(6)Al(III)
-
-
-
-
-
Chemical signature
Ca-Na-Cl
Na-Cl
Na-Cl
Na-Cl
-
(6)Ionic strength
7.6
4.97
6.48
3.82
5.2 × 10−3
(8)TDS
0.34
0.24
0.37
0.21
2 × 10−4
(9)Density
1217
1150
1204
1128
997
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.
