Please note that this session was withdrawn and is no longer available in the respective programme. This withdrawal might have been the result of a merge with another session.

The role of fluids in lithosphere extension (co-organized)
Convener: Laurent Geoffroy  | Co-Conveners: Prof. Dr. Ulrich Anton Glasmacher , Gianreto Manatschal 

Fluids, both hydric and magmatic, play a significant role in lithosphere extension both in continental and oceanic domains. This session addresses this issue and focuses on 4 main questions: (1) how do hydric fluids penetrate from the hydrosphere downward into the lower crust and underlying mantle; (2) what is the role of hydric fluids in facilitating extension within the crust and the mantle (e.g. reduction of normal stresses and breakdown reactions of feldspar and olivine to clays and serpentine changing the rheology); (3) what do we know on the functioning of magma-injected faults in magma-rich extensional systems (oceanic ridges, volcanic passive margins…); and 4) what is the change in stresses due to the flow of hydric and magma fluids within porous and fractured media? Answers to these questions are fundamental to understand the rheology of the lithosphere and consequently to better model lithospheric extension. We expect contributors from all domains in Earth Sciences, including numerical and analogical modeling.