GD1.1 | Inter-disciplinary constraints on the structure, dynamics and evolution of Earth's mantle, with a focus on melts and intra-plate volcanism.
EDI
Inter-disciplinary constraints on the structure, dynamics and evolution of Earth's mantle, with a focus on melts and intra-plate volcanism.
Convener: D. Rhodri Davies | Co-conveners: Wolfgang SzwillusECSECS, Juliane Dannberg, Emma ChambersECSECS, Marthe Klöcking, Juan Carlos Afonso, Nestor Cerpa
Orals
| Mon, 24 Apr, 14:00–17:55 (CEST)
 
Room D3
Posters on site
| Attendance Mon, 24 Apr, 10:45–12:30 (CEST)
 
Hall X2
Posters virtual
| Attendance Mon, 24 Apr, 10:45–12:30 (CEST)
 
vHall GMPV/G/GD/SM
Orals |
Mon, 14:00
Posters on site |
Mon, 10:45
Posters virtual
Mon, 10:45
Improving our understanding of the mantle requires an interdisciplinary approach, combining investigations into fluid dynamic processes, the role of melts and volatiles, and the mantle's present-day structure and its evolution through the geological past. In particular, the present-day structure of Earth's mantle — in terms of seismic velocity, density, conductivity, rheology, and other physical properties — is a crucial constraint for understanding Earth's dynamics and evolution. Recent breakthroughs in joint modelling/inversion of geophysical fields, petrology, transport phenomena and mineral physics allow for a more accurate description of Earth's upper mantle, providing tighter bounds on the physical and chemical processes that it hosts, and linking the evolution of our planet’s surface to its deep interior.

One such link comes via volcanism, our understanding of which remains incomplete. Intra-plate volcanism manifests irrespective of plate boundaries and includes volcanic fields with diverse characteristics and uncertain dynamical origin. Historically, studies have focused on voluminous lava fields and ocean-island tracks, with many now believed to mark the surface expression of mantle plumes. More recently, alternative driving mechanisms, such as edge-driven convection and shear-driven upwelling, have been explored to explain the generation of smaller intra-plate volcanic fields. To further improve our comprehension of intra-plate volcanism, it is critical to determine the applicability of these dynamical mechanisms across different geological settings and to understand how they interact and evolve in space and time.

For this session, we invite contributions integrating multiple methodologies/datasets to address the current state, evolution and interaction with the lithosphere of Earth's upper mantle. We particularly welcome contributions targeting the nature of mantle melts and the generation of intra-plate volcanism. Topics covered by this session include (1) combined dataset inversions through Bayesian and machine learning approaches, (2) dynamic modelling of deep-rooted mantle plumes and their magmatic expression, (3) investigations of possible shallower melt-generation mechanisms, and (4) the role of melts and volatiles in the evolution of Earth and other planetary interiors.

Orals: Mon, 24 Apr | Room D3

Chairpersons: D. Rhodri Davies, Emma Chambers
14:00–14:05
5-minute convener introduction
EGU23-10441
|
ECS
|
solicited
|
Highlight
|
On-site presentation
The role of plume-ridge decoupling on rapid plate motion and intraplate volcanism
Ben Mather et al.
EGU23-12268
|
ECS
|
Highlight
|
On-site presentation
Plume driven plate tectonics: new insights from the Australia/Antarctica separation
Ingo L. Stotz et al.
EGU23-10559
|
ECS
|
Highlight
|
On-site presentation
3-D Modelling of the Dynamical Mechanisms Driving Continental Intra-Plate Volcanism
Thomas Duvernay and Rhodri Davies
EGU23-8343
|
solicited
|
Highlight
|
On-site presentation
Dispersed East Africa-Arabia volcanism fed by a star-shaped mantle plume head
Chiara Civiero et al.
EGU23-4570
|
ECS
|
On-site presentation
Multi-scale anisotropy in NE China: Implications for intra-plate volcanism
Cunrui Han et al.
EGU23-3846
|
ECS
|
On-site presentation
Downwelling dense mantle residues and hotspot magmatism
Jordan J.J. Phethean et al.
EGU23-15035
|
On-site presentation
The carbon cycle in the mantle below intra-continental rift settings
Andrea Luca Rizzo et al.
Coffee break
Chairpersons: Wolfgang Szwillus, Juliane Dannberg
EGU23-1366
|
ECS
|
solicited
|
Highlight
|
On-site presentation
Residence time of crystals in a thermally convecting magma reservoir
Vojtěch Patočka et al.
EGU23-9936
|
ECS
|
On-site presentation
Vaporization of He and C from a Pyrolite Melt: Implications for the Early Earth’s Atmosphere and Interior
(withdrawn)
Anne Davis and Razvan Caracas
EGU23-9854
|
Highlight
|
On-site presentation
Reactive Crystallization of the Basal Magma Ocean: Consequences for present-day mantle structure
Maxim Ballmer et al.
EGU23-2770
|
On-site presentation
Hydrous aluminous silicas as major water hosts in the lower mantle
Tomoo Katsura et al.
EGU23-5459
|
On-site presentation
Global and tectonic-type physical reference models of the upper mantle
Yihe Xu et al.
EGU23-6820
|
ECS
|
On-site presentation
Geodynamic-mineralogical predictions of mantle transition zone seismic structure
Isabel Papanagnou et al.
EGU23-8416
|
ECS
|
On-site presentation
Obtaining robust estimates of the Vs/Vp ratio in the Earth’s lowermost mantle
Federica Restelli et al.

Posters on site: Mon, 24 Apr, 10:45–12:30 | Hall X2

Chairpersons: Marthe Klöcking, Juan Carlos Afonso
EGU23-5041
|
On-site presentation
Numerical modeling of the formation of extensive intraplate volcanism
Jianfeng Yang et al.
EGU23-14630
|
On-site presentation
Can mantle convection by distant rifting induce intraplate volcanism?
Min-Seok Jang and Byung-Dal So
EGU23-14411
|
On-site presentation
Intraplate Lithospheric Deformation Forms Large Volcanic Regions
César R. Ranero et al.
EGU23-8438
|
On-site presentation
Pdiff  Coda Waves as the Result of Distributed Whole-Mantle Scattering
Christoph Sens-Schönfelder et al.
EGU23-17502
|
On-site presentation
Strength and anisotropy of hexagonal Fe-Si-C alloy in planetary cores
Efim Kolesnikov et al.
EGU23-13261
|
ECS
|
On-site presentation
Non-Henrian behavior of hydrogen between plagioclase and silicate melt
Yongjiang Xu et al.

Posters virtual: Mon, 24 Apr, 10:45–12:30 | vHall GMPV/G/GD/SM

Chairpersons: Marthe Klöcking, Juan Carlos Afonso