Evaluation of Tuwa geothermal system through water-rock interaction experiment

The chemical evolution of the Tuwa thermal springs, together with the experimental results on the granite-water interaction at 100 degrees C, indicate that Cenozoic sediments are the main contributors of chloride to the circulating thermal water. Chloride contribution by the granites seems to be slight. The Tuwa geothermal province is located within the triple junction which is the loci of Deccan volcanism. Granites and deep tectonic structures associated with the Deccan volcanism are the main contributors of high geothermal gradient and high heat flow in this province.