Tin isotope fractionation in arc magmas controlled by degassing and slab input

Weicheng Jiang

doi:10.1016/j.gca.2026.03.047

Tin isotope fractionation in arc magmas controlled by degassing and slab input

2026-03-30

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DOI：10.1016/j.gca.2026.03.047

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As a redox-sensitive and volatile-chalcophile tracer, Sn isotopes provide unique insights into the origin and transport mechanisms of Sn at convergent margins, yet the drivers of their fractionation remains poorly understood due to a lack of integrated spatial and process-oriented studies. We present high-precision Sn isotopic compositions of lavas (pumices) and hydrothermal products and clinopyroxene-inferred H2O concentrations from Whakaari (arc-front) and Taranaki (rear-arc) in the Kermadec- Hikurangi subduction system.

Keywords:

Tin isotopes

Arc magmas

Degassing

Slab input

Subduction system

Tin isotope fractionation in arc magmas controlled by degassing and slab input

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