Gibbs plot
The groundwater chemistry and evolution mechanisms in the study area are
shown in Fig.6. The Gibbs plot of the study area shows that 90% of the
sample locations are highly influenced by rock water interaction, and
the remaining 10% of the sample locations are evaporation dominance.
The increasing action of weathering of parent rock, oxidation-reduction,
ion exchange, mineral dissolution, such as calcite and dolomite
dissolution are the major factor that deteriorate the quality of
groundwater. Twenty-eight samples fall under the calcite dissolution,
and two samples fall in dolomite dissolution (Fig.7).