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TS7.4/GD5.7/NH4.15

Probing the subduction plate interface (co-organized)
Convener: Philippe Agard  | Co-Conveners: César R. Ranero , Timm John 
Orals
 / Mon, 24 Apr, 08:30–12:00  / Room D3
Posters
 / Attendance Mon, 24 Apr, 17:30–19:00  / Hall X2
What is the anatomy of the subduction plate interface?

Despite a wealth of recent data from all disciplines, the nature, structure and physical properties of the subduction plate interface are still largely unknown and our picture remains blurred and patchy.

Unravelling major structures and thresholds, determining which lithologies are present and where (and, thereby, rheologies at any relevant scale), which/when/where fluids are released and their exact bearing on material transfer and fluxes as well as on long-term mechanics or earthquake ruptures, is crucial to our understanding of earth dynamics and for risk assessment.

We welcome in this session contributions dealing with fossil or active subduction zones and aiming at integrating results from petrology/geochemistry, onland and marine geophysics, modelling, in an attempt to unveil the skeleton of the subduction plate interface and illuminate processes at work across its first 100 km.

We encourage contributions providing seismological observations of the inter-plate boundary and discussing earthquake phenomena (including NVT, Slow slip, Tsunami EQ) and contributions of field observations interpreted as the fossil record, in rocks, of such earthquake phenomena.