Ba isotope unmasks recycling processes of fluid mobile elements in subduction zones

Key Points

• Fluid mobile elements demonstrate significant recycling processes in subduction zones, influencing geochemical evolution.
• Ba isotopic compositions markedly differ between subducted materials and the resulting volcanic output.
• Analysis of isotopic signatures from fluid samples provides insights into recycling dynamics and element mobility.
• Understanding these processes may enable deeper insights into the geochemical behaviors within the Earth's crust.