Magmatic Signature in Submarine Hydrothermal Fluids Vented Offshore Ventotene and Zannone Islands (Pontine Archipelago, Central Italy)

Figure 4

Geochemical features of water samples from Zannone. The star indicates the local seawater. (a) Na vs. Cl (mg/l) binary diagram; (b, c) Ca and Mg vs. Na+K concentrations (mg/l).

(a)

(b)

(c)