The fate of water at subduction zones and beyond
Volatiles (CO2, H2O, S, Cl) are key features of the Earth and they are efficiently cycled at subduction zones. They modulate volcanic hazards, composition of the continental crust through time, long-term control of the climate, and Earth's habitability. They have also affected the long-term evolution of our planet by facilitating plate tectonics and mantle convection. Water is one of the most important of the volatile species on Earth as it largely contributes to life and oceans.
I evaluate whether (sea)water incorporated into the subducted oceanic plates is fluxed back to the surface via arc and back-arc magmatism or whether it bypasses the depths of generation of subduction zone magmas. I also examine the temporal variations in water-rich slab fluids and their potential influence on past climate changes. |
Further readings
Ribeiro J.M., Ishizuka O., P. Pogge van Strandmann, Tamura Y., Xu Y.G. (2022) Temporal evolution of island arc magmatism and its influence on long-term climate: Insights from the Izu intra-oceanic arc. Frontiers in Earth Science. (INVITED)
Ribeiro J.M., Macleod C., Lissenberg J., Ryan J., Macpherson C. (2022) Origin and evolution of the slab fluids since subduction inception in the Izu-Bonin-Mariana: A comparison with the southern Mariana fore-arc rift. Chemical Geology.
Ribeiro J.M. (2021) Slab dehydration beneath fore-arcs: Insights from the southern Mariana and Matthew-Hunter rifts. Geochemical Perspective Letters, doi: 10.7185/geochemlet.2203.
Ribeiro J.M., Lee C.T.A. (2017) An imbalance in the deep water cycle at subduction zones: Recognizing the importance of the fore-arc mantle, Earth and Planetary Science Letters.
Ribeiro J.M., Stern R.J., Kelley K.A., Shaw A., Martinez F., Ohara Y. (2015) Composition of the slab-derived fluids released beneath the Mariana forearc: evidence for shallow dehydration of the subducting plate.Earth and Planetary Science Letters, doi: 10.1016/j.epsl.2015.02.018.
Ribeiro J.M., Macleod C., Lissenberg J., Ryan J., Macpherson C. (2022) Origin and evolution of the slab fluids since subduction inception in the Izu-Bonin-Mariana: A comparison with the southern Mariana fore-arc rift. Chemical Geology.
Ribeiro J.M. (2021) Slab dehydration beneath fore-arcs: Insights from the southern Mariana and Matthew-Hunter rifts. Geochemical Perspective Letters, doi: 10.7185/geochemlet.2203.
Ribeiro J.M., Lee C.T.A. (2017) An imbalance in the deep water cycle at subduction zones: Recognizing the importance of the fore-arc mantle, Earth and Planetary Science Letters.
Ribeiro J.M., Stern R.J., Kelley K.A., Shaw A., Martinez F., Ohara Y. (2015) Composition of the slab-derived fluids released beneath the Mariana forearc: evidence for shallow dehydration of the subducting plate.Earth and Planetary Science Letters, doi: 10.1016/j.epsl.2015.02.018.