Skip to main content
Go to the home page of the European Commission (opens in new window)
English en
CORDIS - EU research results
CORDIS

Slab Plume Interactions in Deep Earth Regions

Project description

Improved modelling approaches offer unprecedented insight into mantle dynamics

Understanding how the Earth’s mantle works requires studying the interactions between plumes (rising hot material) and slabs (sinking cold material). While seismic images show complex shapes where plumes and slabs meet, most studies focus on them separately, leaving their combined dynamics poorly understood. With the support of the Marie Skłodowska-Curie Actions programme, the SPIDER project aims to model slab-plume interactions using state-of-the-art code. The researcher will develop tools to automatically detect plume and slab morphologies and properties. The developed models will be compared with real-world systems. The proposed work should improve understanding of mantle dynamics and help the researcher establish expertise in geodynamic modelling.

Objective

Understanding mantle dynamics requires deep knowledge of plumes and slabs. Seismic tomography images reveal the existence of interacting slabs and plumes with very intricate shapes. This wide diversity of interacting slab-plume morphologies is indicative of their properties (strength, rheology, composition) and dynamics, although we still lack strong quantitative studies, most numerical models address slab or plume dynamics in isolation. The SPIDER project proposes to focus on slab-plume interactions, in order to decipher the effects of plume and slab properties on their geometry and dynamics. To do so, SPIDER will 1/ numerically model complex slab-plume interactions within a vigorously convecting mantle using the state-of-the-art code StagYY. The applicant will develop topological tools to automatically detect and time-track the plume and slab morphologies and properties; 2/ rigorously explore the effects of the rheological contrasts between slabs and plumes, magmatic-geochemical evolution and mantle melting on slab-plume interaction patterns; and 3/ systematically compare seismic tomography, magmatism and climatic observations in the very distinct Tonga-Samoa and Farallon-Yellowstone slab/plume systems with the characteristics and dynamics of model slab/plume interactions. This unprecedented effort to explain the diversity of observed slab-plume interactions will ultimately help to constrain mantle rheology and dynamics. The applicant will bring his experience in numerical modeling of subduction zone and plume dynamics to the Laboratoire de Géologie de Lyon, Terre, Planètes et Environnement (LGL-TPE, UCBL, France) and University College London, UK, where he will benefit from and contribute to world-leading expertise on the Earth’s mantle-lithosphere evolution in a stimulating intellectual environment. This project will reinforce his professional independence and knowledge diversity as he will become a key player in the geodynamic modeling domain.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

See all projects funded under this funding scheme

Call for proposal

(opens in new window) HORIZON-MSCA-2024-PF-01

See all projects funded under this call

Coordinator

UNIVERSITE LYON 1 CLAUDE BERNARD
Net EU contribution
€ 242 260,56
Address
BOULEVARD DU 11 NOVEMBRE 1918 NUM43
69622 Villeurbanne Cedex
France
Region
Auvergne-Rhône-Alpes Rhône-Alpes Rhône
Activity type
Higher or Secondary Education Establishments
Links
Total cost
No data

Partners (1)