Chemical and isotopic characteristics of the warm and cold waters of the Luigiane Spa near Guardia Piemontese (Calabria, Italy) in a complex faulted geological framework.

Highlights: [•] Geo-structural and hydrogeological patterns: thermal waters discharge in a tectonic window. [•] Use of S isotopes to discriminate different evaporite sources, considering effects of BSR. [•] Use of the local approach instead of the regional approach to investigate the thermal site. [•] Use of geothermometric functions specifically calibrated for the thermal waters of interest. [•] Synthesis of geo-structural, hydrogeological and geochemical results in a conceptual model. [Copyright &y& Elsevier]