Isotopic tracer of thermal spring of S1 well at Sanjian, Mianzhu

Based on the hydrogen and oxygen isotope compositions and radioactive isotope-tritium concentration of the water body of S1 well and its related geological background in Mianzhu, we could determine the contributing factor of the thermal spring by using an isotope tracer technique. The S1 well is mainly caused by meteoric water recharging and the recharge resource of the main aquifer is in the north-west "Pengguan complex" with an altitude of 1 700 metre. The amount of recharge is steady and the temperature does not fluctuated. So the S1 well has a value for long-term exploitation.