Deformation mechanisms in mafic amphibolites and granulites: record from the Semail metamorphic sole during subduction infancy

Soret, Mathieu; Agard, Philippe; Ildefonse, Benoît; Dubacq, Benoît; Prigent, Cécile; Rosenberg, Claudio

doi:https://doi.org/10.5194/se-10-1733-2019

Articles | Volume 10, issue 5

https://doi.org/10.5194/se-10-1733-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/se-10-1733-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 10, issue 5

Research article

|

23 Oct 2019

Research article |

| 23 Oct 2019

Deformation mechanisms in mafic amphibolites and granulites: record from the Semail metamorphic sole during subduction infancy

Mathieu Soret, Philippe Agard, Benoît Ildefonse, Benoît Dubacq, Cécile Prigent, and Claudio Rosenberg

Supplement

https://doi.org/10.5194/se-10-1733-2019-supplement

Data sets

Petrological evidence for stepwise accretion of metamorphic soles during subduction infancy M. Soret, P. Agard, B. Dubacq, A. Plunder, and P. Yamato https://doi.org/10.1111/jmg.12267

Short summary

This study sheds light on the mineral-scale mechanisms controlling the progressive deformation of sheared amphibolites from the Oman metamorphic sole during subduction initiation and unravels how strain is localized and accommodated in hydrated mafic rocks at high temperature conditions. Our results indicate how metamorphic reactions and pore-fluid pressures driven by changes in pressure–temperature conditions and/or water activity control the rheology of mafic rocks.