Barium isotope evidence for recycled crustal materials in the mantle source of continental basalts

Accurate determination of Ba isotope ratios in barite samples by LA-MC-ICP-MS

“…Barium is widely used in high-temperature geological processes and low-temperature environments, especially as proxies of biological processes and productivity in marine environments. [1][2][3] Large variations in Ba isotopic composition can occur in both a high temperature geological process and low temperature environment. [4][5][6] Barite is the main mineral of barium in nature and is mainly produced in hydrothermal and sedimentary deposits, oen co-existing with chalcopyrite, galena, sphalerite and cinnabar.…”