We added: “We define as recent tectonic activity the events that are recorded at the surface and can alter the surface with active tectonic features, such as modifications of the drainage system” • Discussion: One general comment, could the use of other tracers (radon, of stable isotopes of water) yield also insight on the origin of the fluids sampled in this study?
Overall, the implications of this study are important not only for industrial purposes (reservoir exploration and operation) but also for our basic understanding of subsurface flow processes over geological timescales.