Sessions description

Session 1: Strain Localization and long term tectonics

A characteristic feature of plate tectonics is the localization of strain, mostly but not exclusively, along plate boundaries. During rifting phases, ocean formation, subduction, and mountain building, strain is often localized along large-scale detachment faults or at the base of tectonic nappes. However, the mechanisms controlling strain localization and the reasons for associated long-term weakening of tectonic plate still remain unclear. For this session, we welcome contributions focusing on strain localization over tectonic time scales, widely ranging from slow slip processes to the overall evolution of oceanic plates or mountain ranges, and involving all spatial scales. Particularly, we invite contributions that apply mathematical and experimental modeling methods to study and quantify strain localization processes.

Session 2 : Seismic Cycle 

Fault zones in the brittle crust are intricate structures with physical properties evolving over timescales ranging from a few seconds (earthquakes) to millions of years (tectonic evolution) and involving slip spanning several orders of magnitude, from millimeters to tens of kilometers. In particular, dynamic ruptures lead to change of on‐fault and off‐fault physiochemical properties and microstructure, which in turn affect nucleation processes, extent and timing of rupture, seismic wave radiation, and aseismic deformation. As a consequence, study of brittle faulting and earthquake processes is fundamentally multidisciplinary, involving field observations, geodetic and seismological measurements, laboratory experiments, numerical studies. 

The goal of this geomod session is to bring together analog and numerical modeling of seismic and aseismic faulting  to share knowledge on the properties and processes of fault zones in the brittle crust. We especially welcome contributions that make the bridge between the different disciplines (analog to numerics, modeling to observations) to study the earthquakes, aseismic transients, seismic cycles and the link to longterm tectonic evolution.

Session 3 : Geodynamics 

Geodynamics processes shape the dynamic nature of our planet, driving tectonic activity, mountain formation, volcanic eruptions, and the evolution of Earth's interior. This session offers an exceptional opportunity to explore cutting-edge advancements in geodynamics modeling and their implications.The session will encompass a wide range of geodynamics phenomena, including subduction processes, lithospheric deformation, continental collision, mantle plumes, and the dynamics of hotspot volcanism. 

We hope to engage in captivating discussions on how models are refined and validated against geophysical observations, improving our understanding of Earth's past, present, and future behavior.

Session 4 : Surface process Modelling - Geomorphology

This session is dedicated to recent advances of analogue and numerical modelling on landscape evolution, including erosional  processes, sediment production, transport and deposition, over a broad range of spatial and temporal scales. We particularly welcome contributions discussing interactions between these surface processes, and climate, tectonics, upper mantle dynamics, or anthropic activities. Since ecosystems are also intimately linked to landscapes, we also invite contribution discussing their intimate relationships.

Session 5: Geothermal and Volcanic processes

Magmatic systems span a wide variety of scales in the crust, with molten rocks being able to evolve and stall for millions of years at its base, and also migrate sometimes within days, producing catastrophic eruptions on the Earth’s surface. Magmas are complex 3 phases mixtures of liquid, gas and crystals. Their physical properties and their ability to reach the surface depend not only on their composition but also on how they interact with the crust during their journey from depth. Understanding the conditions for slow versus fast migration, chemical evolution and exchanges with the surrounding bedrock, require to account all together for the thermodynamical and mechanical balance equations.
Recent modelling approaches provide insight into the key parameters that are involved; for instance, sometimes exotic rheologies are considered in comparison to standard brittle failure, viscous and porous media flow, with enigmatic time-space description of magmatic mushes in order to fit a broad, yet sparse, variety of observations. Field data have become more accurate thanks to improvements in satellital acquisition in terms of temporal and spatial coverage of surface deformation of active volcanic complexes, as well as improvements in petrodynamical experiments and analyses of magmatic rocks, that capture ever better inter-tangled processes at the small scale. With direct societal implications in terms of volcanic hazard and geothermal resources, this session welcomes contributions that address progresses in modelling of volcanic processes; how can the integration of theoretical assumptions and challenging observations help enlighten their physical description?

Session 6: Tectonics from lithosphere to reservoirs 

The impact of geological heterogeneity on fluid circulation, whether aimed at comprehending the sustainability of deep storage or studying mineralization and ore deposits linked to magmatic and hydrothermal events, is profoundly influenced by vertical tectonic elements like strike-slip systems and salt diapirs. The understanding of these structures is achieved through advanced 3D modeling techniques, demanding state-of-the-art methodologies.This session centers on the 3D modeling of tectonic processes and and fluids, with a specific emphasis on the current cutting-edge methodological advancements within this domain.