3D hydrogeological modelling supported by geochemical mapping as an innovative approach for management of aquifers applied to the Nurra district (Sardinia, Italy)

Stefania Da Pelo (a), Giorgio Ghiglieri (a-b), Cristina Buttau (a), Claudio Cuzzocrea (b), Alberto Carletti (a-b), Riccardo. Biddau (a), Patrizia Fenza (a), Claudio Arras (a-b), Antonio Funedda (a) & Rosa Cidu (a)
(a) Department of Chemical and Geological Sciences, University of Cagliari, Via Trentino 51 – 09127 Cagliari, Italy. (b) Desertification Research Center – NRD, University of Sassari, Viale Italia 39 – 07100 Sassari, Italy.

A hydrogeological 3D modelling, supported by hydrogeochemical mapping and integrated interpretation of available data, was performed. The proposed methodology was applied to the strategic aquifer of the Nurra district (NW Sardinia, Italy). The finding of this work highlighted that structural history of the Nurra district exerts a relevant control on the hydrogeology and hydrochemistry of groundwater. The local connection of Triassic and Jurassic aquifers was proposed. The knowledge-base system will provide a suitable and effective tool for understanding and monitoring pollutants transfer dynamics into groundwater to better manage water resources and mitigate desertification processes.

3D hydrogeological model, desertification, hydrogeochemistry, pollution, Sardinia - Italy.