Metamorphic devolatilization of subducted oceanic metabasalts: implications for seismicity, arc magmatism and volatile recycling

• Published in: Earth and planetary science letters Vol. 189; no. 1; pp. 19 - 29
• Main Authors: Kerrick, D.M., Connolly, J.A.D.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 30.06.2001
• Subjects: carbon dioxide; Marine; metabasalt; metamorphism; subduction; volatilization; subduction; carbon dioxide; metamorphism; metabasalt; volatilization

Subducted oceanic metabasalts are believed to be a primary source of volatiles for arc magmatism and fluid-induced seismicity. From phase equilibria computed for an average oceanic metabasalt we present a model for subduction zone devolatilization for pressures up to 6 GPa (∼180 km). Along high temp...