Project description DEENESFRITPL Geodynamic modelling of North Atlantic rifted margins In the history of Earth, supercontinents rift into pieces and diverge, as new ocean basins are created. After some time, they reverse their movement and converge back together, colliding and forming mountains. This cycle of opening and closing ocean basins is known as the Wilson Cycle, and subduction initiation is one of its key turning points. But how it unfolds remains a mystery. The southern North Atlantic is a unique natural laboratory for this investigation. The EU-funded SUBIMAP project will study the role of inherited structures on the reactivation of passive margins, using qualitative and quantitative constraints derived from examples along the southern North Atlantic rifted margins, coupled with geodynamic models of subduction initiation. SUBIMAP's international and multidisciplinary team aim to enhance our understanding of the Earth system. Show the project objective Hide the project objective Objective Subduction initiation is a key turning point in the Wilson cycle. How it unfolds remains a glaring unknown in our understanding of the evolution of the Earth’s oceans and mountain belts. Tectonic inheritance acquired at passive margins imposes a major control on how subduction zones may form and propagate in Atlantic-type oceans. In particular, magma-poor rifted margins seem to share characteristics that may localize compressional deformation and lithospheric rupture. The southern North Atlantic represents a unique natural laboratory to investigate the main factors that control the early stages of passive margin reactivation, prior to the onset of subduction. This project aims to study the role of inherited structures on the reactivation of passive margins using qualitative and quantitative constraints derived from examples along the southern North Atlantic rifted margins, coupled with geodynamic models of subduction initiation. The study region encompasses a number of reactivated magma-poor rifted margins that preserve different stages of the Wilson cycle, including: 1) the pristine Newfoundland margin; 2) an incipient, dormant, subduction zone in the western Bay of Biscay; and 3) an example of passive margin reactivation in Western Iberia. We will first map different styles and stages of margin reactivation along the studied Atlantic margins. Direct observations will be used to constrain kinematic reconstructions of the spatial and temporal evolution of these margins from rift to drift to reactivation. The identified key parameters that control reactivation will then be tested and explored using numerical geodynamic models. The action will involve an experienced international and multi-disciplinary team that will work closely together to further enhance our understanding of the Earth system. This opportunity will also provide the candidate with a new set of opportunities to boost her career and to develop strong coordination and leadership skills. Fields of science natural sciencesearth and related environmental sciencesgeologyseismologyplate tectonics Keywords Geophysics Geodynamics Plate Tectonics Subduction Magma-poor rifted margins Rift Inheritance Rifting Compressional reactivation Programme(s) H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions Main Programme H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility Topic(s) MSCA-IF-2019 - Individual Fellowships Call for proposal H2020-MSCA-IF-2019 See other projects for this call Funding Scheme MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF) Coordinator FCIENCIAS.ID - ASSOCIACAO PARA A INVESTIGACAO E DESENVOLVIMENTO DE CIENCIAS Net EU contribution € 225 938,88 Address CAMPO GRANDE, EDIFICIO C1, PISO 3 1749 016 Lisbon Portugal See on map Region Continente Área Metropolitana de Lisboa Área Metropolitana de Lisboa Activity type Research Organisations Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Total cost € 225 938,88 Partners (1) Sort alphabetically Sort by Net EU contribution Expand all Collapse all Partner Partner organisations contribute to the implementation of the action, but do not sign the Grant Agreement. MEMORIAL UNIVERSITY OF NEWFOUNDLAND Canada Net EU contribution € 0,00 Address 230 ELIZABETH AVENUE AIC 5S7 ST JOHN'S See on map Activity type Higher or Secondary Education Establishments Links Contact the organisation Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Total cost € 152 031,36
