Géochimie isotopique du strontium des barites, anhydrites, calcites et fluorites de Belgique

The Sr isotopic composition of all barites (either from sedimentary or from vein-type deposits) are higher than sea-water values at the deposition time of the corresponding host-rocks. This fact suggests a crustal (continental) origin for both Sr and Ba. On the contrary, fluorites, massive anhydrites and barito-celestites present 87Sr/86Sr ratios similar to those of sea-water at the deposition time of the surrounding rocks. -from English summary ; SCOPUS: ar.j ; info:eu-repo/semantics/published