GD7.2 | Long-term rheology , heat budget and dynamic permeability of deforming and reacting rocks: from laboratory to geological scales
Long-term rheology , heat budget and dynamic permeability of deforming and reacting rocks: from laboratory to geological scales
Co-organized by GMPV4
Convener: Yury Podladchikov | Co-conveners: Lucie Tajcmanova, Shun-ichiro Karato, Evangelos MoulasECSECS, Leni Scheck-Wenderoth
Orals
| Mon, 15 Apr, 16:15–18:00 (CEST)
 
Room -2.47/48
Posters on site
| Attendance Mon, 15 Apr, 10:45–12:30 (CEST) | Display Mon, 15 Apr, 08:30–12:30
 
Hall X2
Posters virtual
| Attendance Mon, 15 Apr, 14:00–15:45 (CEST) | Display Mon, 15 Apr, 08:30–18:00
 
vHall X2
Orals |
Mon, 16:15
Posters on site |
Mon, 10:45
Posters virtual
Mon, 14:00
The goal of this session is to reconcile short-time/small-scale and long-time/large-scale observations, including geodynamic processes such as subduction, collision, rifting, or mantle lithosphere interactions. Despite the remarkable advances in experimental rock mechanics, the implications of rock-mechanics data for large temporal and spatial scale tectonic processes are still not straightforward, since the latter are strongly controlled by local lithological stratification of the lithosphere, its thermal structure, fluid content, tectonic heritage, metamorphic reactions, and deformation rates.

Mineral reactions have mechanical effects that may result in the development of pressure variations and thus are critical for interpreting microstructural and mineral composition observations. Such effects may fundamentally influence element transport properties and rheological behavior.
Here, we encourage presentations focused on the interplay between metamorphic processes and deformation on all scales, on the rheological behavior of crustal and mantle rocks, and time scales of metamorphic reactions in order to discuss
(1) how and when up to GPa-level differential stress and pressure variations can be built and maintained at geological timescales and modeling of such systems,
(2) deviations from lithostatic pressure during metamorphism: fact or fiction?
(3) the impact of deviations from lithostatic pressure on geodynamic reconstructions.
(4) the effect of porous fluid and partial melting on the long-term strength.
We, therefore, invite the researchers from different domains (rock mechanics, petrographic observations, geodynamic and thermo-mechanical modeling) to share their views on the way forward for improving our knowledge of the long-term rheology and chemo-thermo-mechanical behavior of the lithosphere and mantle.

Orals: Mon, 15 Apr | Room -2.47/48

Chairpersons: Yury Podladchikov, Lucie Tajcmanova
Strain and fluid flow localization
EGU24-1660
|
ECS
|
On-site presentation
Structural softening in poro-elasto-plastic media
Yury Alkhimenkov and Ruben Juanes
EGU24-22551
|
Highlight
|
On-site presentation
Thermal softening in the ductile and brittle lithosphere
Dániel Kiss
EGU24-10501
|
Highlight
|
On-site presentation
Modelling focused fluid flow in the subsurface: its controlling factors and the formation of seismic chimney 
Lawrence Hongliang Wang and Viktoriya Yarushina
Reactive flows
EGU24-8478
|
On-site presentation
Reaction-driven mineral expansion and its impact on fluid flow
Viktoriya Yarushina et al.
Geodynamics
EGU24-5497
|
ECS
|
On-site presentation
A thermo-mechanical model of the thermal evolution and incorporation of the metamorphic sole in the Oman ophiolite
Iskander Ibragimov and Evangelos Moulas
EGU24-14329
|
Highlight
|
On-site presentation
Generation of Felsic Crust: A Fluid Transport Perspective
Leonid Aranovich et al.
17:55–18:00
Discussion

Posters on site: Mon, 15 Apr, 10:45–12:30 | Hall X2

Display time: Mon, 15 Apr 08:30–Mon, 15 Apr 12:30
Chairpersons: Evangelos Moulas, Leni Scheck-Wenderoth
Effective rheology and strain localization
EGU24-19434
|
On-site presentation
Numerical assessment of effective bulk moduli of porous rocks using high-performance computing on GPUs
Maxim Yakovlev and Victoriya Yarushina
Pressure rise mechanisms
EGU24-15739
|
On-site presentation
Occurrence of eclogite in felsic continental rocks as a natural consequence of burial
Johannes C. Vrijmoed et al.
Regimes of convective flows and porosity waves
EGU24-17074
|
ECS
|
On-site presentation
Thermal porosity waves
Ludovic Räss et al.
EGU24-15242
|
ECS
|
On-site presentation
Numerical modelling and classification of thermo-hydro-mechanical convective regimes
Boris Antonenko et al.
Reactive porosity waves
Microstructures
EGU24-22558
|
ECS
|
Highlight
|
On-site presentation
Influence of intracrystalline deformation on chemical diffusion in garnet around coesite inclusions
Cindy Luisier et al.

Posters virtual: Mon, 15 Apr, 14:00–15:45 | vHall X2

Display time: Mon, 15 Apr 08:30–Mon, 15 Apr 18:00
Chairperson: Yury Podladchikov