Carbon Mobility and Exchange in a Plate-Interface Subduction Mélange: A Case Study of Meta-Ophiolitic Rocks in Champorcher Valley, Italian Alps

The Subducting Slab as a Chromatographic Column: Regimes of Sub‐Solidus Mass Transport as a Function of Lithospheric Hydration State, With Special Reference to the Fate of Carbonate

“…We note that our 4‐layer slab structure is most representative of fast‐spreading ''pacific‐type'' subduction settings. Atlantic‐type environments that lack a continuous mafic layer are relevant as well (Agard, 2021) and they would include highly contrasted sediment/serpentinite interfaces (e.g., Galvez et al., 2013; Malvoisin et al., 2012; Scambelluri et al., 2022) which are not represented here. Interestingly, the first fluids produced in the altered ultramafic and mafic layers may be rich in both K and Mg, ie.…”