RISING - The Role of continental lithosphere In Subduction zones: sINking or floatinG?

PRIN 2022 Giuntoli

Abstract

RISING aims to make a step-change in our understanding of how continental subduction and exhumation develops and evolves by using a multidisciplinary, multi-resolution approach. The proposed study will exploit the full richness of passive-seismic data recently acquired in the area spanning the entire UAE-Oman orogenic belt and its foreland basins, along with cutting-edge imaging techniques, to generate detailed 3-D tomographic models of the lithosphere and underlying upper mantle. RISING will then combine the new seismic observations with new key constraints derived from field, structural, petrological and geochronological analyses along three cross sections. This major effort will be the base for several research avenues, which will allow to: i. Apply advanced transdimensional, Bayesian, hierarchical geophysical inversion methods to passive-seismic data to produce unprecedented quantitative constraints of the lithosphere and underlying upper mantle beneath the study area, which will ultimately point to a set of observables responsible for continental subduction. ii. Define the kinematics, deformation mechanisms and metamorphic conditions of major shear zones, along with the distinctive sequence and duration of tectonic events that led to continental subduction and subsequent exhumation. iii. Develop a model for subduction and exhumation of the continental crust-mantle system beneath an oceanic plate. The tectonic reconstruction of the Oman mountain range holds the key to the understanding of subduction-exhumation processes. RISING will be the first to illuminate the deep structure of the UAE-Oman mountain range and tie the results with crucial new constraints from structural, petrological and geochronological analyses, providing solid constraints on this complex, yet fundamental tectonic process.

Project details

Unibo Team Leader: Francesco Giuntoli

Unibo involved Department/s:
Dipartimento di Scienze Biologiche, Geologiche e Ambientali

Coordinator:
ALMA MATER STUDIORUM - Università di Bologna(Italy)

Total Unibo Contribution: Euro (EUR) 95.520,00
Project Duration in months: 24
Start Date: 28/09/2023
End Date: 28/02/2026

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