Nature and Origin of Mineralizing Fluids in Hyperextensional Systems: The Case of Cretaceous Mg Metasomatism in the Pyrenees

Figure 6

Cl/Br vs. Cl graph of the compositions of the water contained in the different samples. The horizontal extents correspond to the standard deviation of the chlorinity (Table 2) and the vertical extents of the maximum and minimum values of the Cl/Br ratio for the samples (Table 1). Seawater evaporation trend taken from Fontes and Matray [51]. SW: seawater; G: gypsum; H: halite (H₀: beginning of halite precipitation → H₃: end of the halite precipitation); E: epsomite; S: sylvite; C: carnallite; B: bischofite; T: tachyhydrite.