Fluoride in the Serra Geral Aquifer System: Source Evaluation Using Stable Isotopes and Principal Component Analysis
Figure 6
Hydrogeological spatial trends of δ 2H (a) and δ 18O (b) in the GAS (data from [20]) and major tectonic fault systems: Mata-Jaguari, (2) Terra de Areia-Posadas, (3) Perimpo, and (4) Leao.
