Characterization of Origin and Evolution of Formation Water in Buried Hill of Jizhong Depression, China, Using Multivariate Statistical Analysis of Geochemical Data
Table 3
Main geochemical areas and geological and hydrogeological contexts related to groundwater clusters.
Properties of the geochemical areas
Water supply area
Strong alternating area
Weak alternating area
Hydrodynamic blocking area
Discharge area
TDS (g/l)
<1
0.5∼4
4∼15
5∼40
5∼40
rNa/rCl
>3
1.4∼2.0
1.2∼1.4
0.9∼1.2
0.6∼1.1
rCl-Na/rMg
<−40
−50∼−20
−15∼−5.0
−9∼5
−5∼15
Relative hydraulic gradient
Strong
Strong to moderate
Moderate
Moderate to small
Small
Hydrogeochemical environment
Open
Semiopen-open
Semiopen-semiclosed
semiclosed-closed
semiclosed-closed
Main groundwater clusters
C1
C1, C2
C2, C3
C3, C4
C3, C4
Main geochemical processes
Atmospheric water Dissolution of carbonates
Atmospheric water Evaporation concentration Dissolution of carbonates
