Figure 2

Weathering plots for (a) Na+ versus Cl−, (b) Ca2+ + Mg2+ versus HCO3−, (c) (Na+  + K+) versus TZ+ , (d) (Ca2+  + Mg2+) versus TZ+ , (e) (SO4 + HCO3) versus (Ca2+ + Mg2+), (f) (Na+  + K+) versus (Cl− + SO42 ), (g) (Na+-Cl−) versus (Ca2+ + Mg2+)-(SO42−+HCO3−).