Geochemical Constraints on the Origin and Evolution of Spring Waters in the Changdu‐Lanping‐Simao Basin, Southwestern China

Chemical and isotopic data were measured for 51 leached brine springs in the Changdu‐Lanping‐Simao Basin (CD‐LP‐SM), China. The predominance of Cl and Na, saturation indices of carbonate minerals, and Na/Cl and Ca/SO 4 ratios of ∼1 suggest that halite, sulphate, and carbonate are the solute sources. Integration of geochemical, δ 18 O, and δ D values suggests that springs are mainly derived from meteoric water, ice‐snow melt, and water‐rock...