GD – Geodynamics

Programme Group Chair: Laetitia Le Pourhiet

GD1 –  Earth and Planetary Dynamics, Structure, Composition and Evolution 

Sub-Programme Group Scientific Officers: Jerome Noir, Maelis Arnould, Frederic Deschamps

Proposals are marked in red.

Session short summary:
Session discusses mantle geochemistry structure thermobarometric of rocks, metasomatism and its agencies. Mantle magmatism and relations to plumes and subductions processes, trace element and isotopic geochemistry will be also discussed
Keywords: Lithospheric mantle, Mantle convection (Mantle dynamics), Mantle geochemistry, Mantle plume (Hot spot), Mantle structure
Co-organization suggestions:
GMPV8 | Mineralogic, chemical and physical structure from mantle to core to surface
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Session short summary:
This session will review progress in research on the Tethyan Belt. It includes unique tectonic features related to the closure of the Tethyan oceans and subsequent continental collision, which formed major mineral repositories. We invite contributions based on a range of geoscientific methods to obtaining new insight into key processes that shape the evolution of the Earth.
Keywords: Collisional orogens, Continental crust, Continental lithosphere, Mineral resources, Subduction (Subduction zones)
Co-organization suggestions:
SM6 | Seismic Imaging (from near-surface to global scale, incl. methodological developments)
TS9 | General Topics in Tectonics and Structural Geology
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Session short summary:
This session explores the dynamic interactions between mantle plumes and plate tectonics, and how these processes influence and modify one another across different tectonic settings and spatio-temporal scales. We welcome multidisciplinary contributions investigating plume-tectonic interactions through observations, modelling, experiments, and geochemical and geophysical approaches.
Keywords: Mantle convection (Mantle dynamics), Mantle plume (Hot spot), Plate Tectonics
Co-organization suggestions:
GMPV8 | Mineralogic, chemical and physical structure from mantle to core to surface
TS7 | Global and Planetary Tectonics and the Evolution of the Earth
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Session short summary:
Earth’s magnetic field is generated in the core and shaped by heat flow from the mantle, affecting its strength, geometry, and reversals. This session unites experts from multiple fields to explore core-mantle interactions, geomagnetic evolution, and impacts on life.
Keywords: Core-mantle boundary (CMB), Mantle convection (Mantle dynamics), Palaeomagnetism (paleomagnetism), Planetary core, Seismic tomography
Co-organization suggestions:
BG1 | General Biogeosciences
ERE | Energy, Resources and the Environment
GMPV | Geochemistry, Mineralogy, Petrology & Volcanology
SM1 | General Seismology
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Session short summary:
A holistic view of the dynamics, tectonics, structure, composition and evolution of Earth and rocky planetary bodies on temporal scales ranging from present day to billions of years and on spatial scales ranging from microscopic to global, bringing together constraints from geodynamics, seismology, mineral physics, geochemistry, petrology, volcanology, planetary science and astronomy.
Keywords: Mantle convection (Mantle dynamics), Mantle geochemistry, Planetary differentiation, Planetary interior
Co-organization suggestions:
GMPV8 | Mineralogic, chemical and physical structure from mantle to core to surface
PS1 | Terrestrial planets
SM9 | Co-organized Sessions
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GD2 –  Plate Boundary Dynamics, Structure and Evolution Across Timescales; Conceptual and Regional Perspectives 

Sub-Programme Group Scientific Officers: Jeroen van Hunen, Antoniette Greta Grima, Laetitia Le Pourhiet

GD3 –  Rheology, Rock and Mineral Physics, and Multiphase Materials in Geodynamics 

Sub-Programme Group Scientific Officers: Boris Kaus, Frederic Deschamps, Laetitia Le Pourhiet

Proposals are marked in red.

Session short summary:
Mechanical anisotropy is widespread throughout the Earth and provides key insights into subsurface geodynamic processes. This session brings together multidisciplinary studies spanning geophysics, mineral physics, seismology, magnetotellurics, and geodynamic modelling to improve our understanding of anisotropy across all spatial scales, tectonic settings, and depths within the Earth.
Keywords: Anisotropy, Numerical modelling - mechanical, Rheology, Seismic imaging
Co-organization suggestions:
EMRP1 | Rock and Mineral Physics
SM6 | Seismic Imaging (from near-surface to global scale, incl. methodological developments)
TS1 | Deformation Mechanisms, Rheology, and Rock-Fluid Interactions
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GD4 –  Geodynamics across the Earth System: Surface Processes, Climate, Life and Feedbacks 

Sub-Programme Group Scientific Officers: Maelis Arnould, Antoniette Greta Grima, Jeroen van Hunen

GD5 –  Modelling, Inversion, Data Assimilation, Multiscale and Multiphysics Methods for Geodynamics 

Sub-Programme Group Scientific Officers: Boris Kaus, Jerome Noir, Laetitia Le Pourhiet