Magnesium isotopes reveal multi-stage slab-derived fluid–rock interactions in subduction channels: Insight from vein-bearing high-pressure carbonated metabasites

Table S1. Bulk-rock major and trace element compositions of the studied metabasites.
Table S2. Bulk-rock Mg isotopic compositions of the SW Tianshan metabasites.
Table S3. EPMA analyses of host rocks and omphacite-rich veins in the studied metabasites.
Table S4. Solution models used for thermodynamic modelling.
Table S5. Effective bulk-rock compositions in Fig. 6 and Fig. S4 used for thermodynamic modelling with Perple_X.
Table S6. Compilation of temperature estimates obtained from geothermometry.