A new study on Nature Communications about the role of boron in subducting mantle

Researchers from Leeds University and SUERC (UK), along with Samuele Agostini (IGG-CNR, Pisa) published a paper on Nature Communications about the role of boron in subducting mantle. 

The paper relies on the study of samples dragged at Hess Deep, a fast-spreading ridge close to the Galapagos Triple Junction, where a vide section of lower oceanic crust is exposed. Study of these samples show that most of the most of boron taken up along with seawater during ocean floor serpentinization is not not directly carried down in the sub-arc mantle, because it is mostly released in the first stages of subduction in the forearc mantle. Only a prolonged hydrothermal circulation, and the involvement in subduction dynamics of slabs of forearc mantle, allow big amount of B-rich fluids to metasomatize the mantle.

Reference: Andrew M. McCaig, Sofya S. Titarenko, Ivan P. Savov, Robert A. Cliff, David Banks, Adrian Boyce, and Samuele Agostini (2018). No significant boron in the hydrated mantle of most subducting slabs. Nature Communications, 9: 4602, doi 10.1038/s41467-018-07064-6.

Paper is available here: https://www.nature.com/articles/s41467-018-07064-6.pdf?origin=ppub

For further information please contact Samuele Agostini, CNR-IGG, samuele.agostini(at)cnr(dot)it