Forearc regions along convergent margins are the most highly active tectonic environments worldwide. Despite that these areas are predominantly shaped by convergence, they are subjected to particular tectonic processes like tectonic erosion, basal underplating, frontal accretion, upper-crust faulting, trench migration, the subduction seismic cycle, etc. Particularly, these drivers operate at different timescales and contribute unevenly to the final measured signature. As such, since differentiating between them is challenging, characterizing deformation remains elusive. This is key for understanding how the forearc deforms across geological (million years) to seismic cycle (tens to hundreds of years) timescales.

Typically, tectonic drivers are studied from a singular discipline. As a result, the role of processes that operate across timescales is masked out. To expand our perspective, this session will bring together multidisciplinary approaches that integrate different datasets spanning from regional to outcrop scales, and from tens to million years. We welcome novel contributions that quantify one (or several) tectonic driver(s) in the context of complex forearc geodynamics. We expect studies that integrate the following approaches: geochronology, tectonic geomorphology, structural geology, laboratory experiments, instrumental seismicity, analog models, numerical modeling. Our aim is to unify our understanding about forearc deformation into a comprehensive tectonic process.