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Meaning of symbols: the green solid triangle, SIDolomite of shallow groundwater; the blue hollow triangle, SICalcite of shallow groundwater; the big solid red triangle, SIFluorite of shallow groundwater; the small solid red circle, SIDolomite of deep groundwater; the big hollow red circle, SICalcite of deep groundwater; the big solid red circle, SIFluorite of deep groundwater.
