Fluid‐Driven Shear Instabilities in the Subducted Oceanic Mantle at Intermediate Depths: Insights From Western Alps Meta‐Ophiolites
J. Muñoz‐Montecinos,
S. Angiboust,
C. Minnaert
et al.
Abstract:Serpentinites are major carriers of volatiles in deep subduction zones, releasing most fluids in the 500–650°C range. Despite fundamental implications for mass transfer and intermediate‐depth seismicity, the mechanical role of these fluids is unclear. To characterize the mechanical role of fluids at (ultra)high‐pressure conditions, we perform a petro‐structural analysis on olivine‐rich veins from the Western Alps meta‐ophiolite. Some veins formed through dilational and mixed dilational‐shear fracturing without… Show more
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