Wouter P. Schellart
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Geodynamics of Long‐Term Indian Continental Subduction and Indentation at the India‐Eurasia Collision Zone Open
The India‐Eurasia convergence is a long‐term, ongoing process despite the continental collision and associated velocity reduction from ∼15 to 20 cm/yr in the Late Cretaceous‐earliest Eocene to ∼4–5 cm/yr (since ∼40 Ma). Previous studies th…
View article: Seismic evidence for oceanic plate delamination offshore Southwest Iberia
Seismic evidence for oceanic plate delamination offshore Southwest Iberia Open
Subduction of oceanic lithosphere and delamination of continental lithosphere constitute the two predominant mechanisms by which the Earth’s surface is recycled into the mantle. Continental plate delamination typically occurs in collisiona…
Numerical Geodynamic Modeling of Buoyancy‐Driven Tethyan‐type Ophiolite Emplacement Open
Ophiolites are exposed remnants of oceanic lithosphere that avoid subduction and are instead subaerially exposed, being usually emplaced onto a continental domain. One proposed emplacement mechanism, the Tethyan‐type, requires the subducti…
2D Numerical modelling of continental subduction and synthetic obduction Open
Continental subduction beneath an overriding oceanic plate is known to occur in nature, following the arrival of a continental margin at an intra-oceanic subduction zone, and often implying synthetic (i.e., Tethyan type) obduction. However…
The effect of oceanic forearc serpentinization on ophiolite emplacement: Insights from 3D geodynamic models Open
Ophiolites are exposed remnants of oceanic lithosphere that are critical to our understanding of the structure, composition, and evolution of the oceanic lithosphere.Some ophiolites (e.g., some Tethyan-type ophiolites) originate in the oce…
View article: Evidence of oceanic plate delamination in the Northern Atlantic
Evidence of oceanic plate delamination in the Northern Atlantic Open
Earth is a dynamic planet with its surface constantly recycled by plate tectonics and surface processes. Subduction of oceanic lithosphere and delamination of continental lithosphere are two of the main mechanisms by which the Earth’s lith…
Cretaceous Crust in the Scotia Sea: Missing Pieces in a Geological Puzzle? Open
The interplay between regional tectonics and the development of a major ocean gateway between the Pacific and the Atlantic Ocean has resulted in numerous paleogeographic reconstruction studies that describe the Cenozoic tectonic history of…
Subduction dynamics and overriding plate deformation Open
The style of overriding plate deformation at subduction zones varies from backarc spreading and basin formation, as found in the Scotia Sea, to shortening and cordilleran orogeny, as observed in the Andes. Why this difference exists and wh…
Dynamical evolution of forearc subsidence controlled by slab geometry Open
The forearc is the region of the overriding plate (OP) that physically interacts with the subducting plate (SP) and is expected to record critical information about subduction dynamics. A way to access such information is through its topog…
Subduction dynamics and overriding plate deformation Open
Many subduction zones on Earth experience active overriding plate deformation. Most experience extension, resulting in the formation of a backarc basin (e.g. East Scotia Sea, North Fiji Basin, Aegean Sea), while some experience shortening,…
Proto-ophiolite serpentinization may influence ophiolite emplacement: Insights from numerical models  Open
Ophiolites are exposed remnants of oceanic lithosphere that are critical to our understanding of the structure, composition, and evolution of oceanic plates.Some ophiolites (e.g., some Tethyan-type ophiolites) originate in the oceanic fore…
Numerical and analogue modelling of boudinage under non-coaxial shear strain Open
The recognition of different boudinage patterns is of key importance to the unravelling of the tectono-metamorphic evolution of different domains in different tectonic contexts and at different considered spatio-temporal scales.The main re…
Geodynamic models of Indian continental flat slab subduction with implications for the topography of the Himalaya-Tibet region Open
The slab structure and high elevation of the Himalaya-Tibet region and their underlying mechanisms have been widely discussed. Many studies interpret a flat slab segment of Indian continental lithosphere located below the overriding plate,…
Effects of Along‐Trench Asymmetric Subduction Initiation on Plate Rotation and Trench Migration: A Laboratory Modeling Perspective Open
The impact of along‐trench asymmetric subduction on plate kinematic evolution (e.g., plate rotation and trench migration) remains enigmatic. In this study, analog experiments were performed to investigate the effects of symmetric and asymm…
Geodynamic models of Indian continental flat slab subduction with implications for the topography of Himalaya-Tibet region Open
Topography data and topview photos
The Tectonic Evolution of the Scotia Sea Region from the Cretaceous until today 1 Open
New tectonic reconstruction based on qualitative comparison endmember reconstructions •The Central Scotia
Analogue modelling of the Ainsa oblique zone in the Southern Central Pyrenees, Spain Open
The Pyrenees are a collisional orogen striking WNW-ESE. However, in the Ainsa oblique zone in the south-central part of the Pyrenees, faults and folds rotate to ∼N–S over a westward thinning evaporitic layer. The influence of lateral chang…
Multi-scale numerical modelling of subduction interface rheology Open
The physical nature and the rheology of the subduction interface play an important role in the deformation of the overriding plate, the degree of locking of the subduction zone plate boundary, and the rate of subduction. Here, we employ th…
Protracted continental subduction, indentation and collisional boundary migration coupled with adjacent oceanic slab-rollback and slab detachment in large-scale buoyancy-driven 3D whole-mantle scale numerical models of subduction-and-collision. Open
Continental collision zones form at convergent plate boundaries after negatively buoyant oceanic lithosphere subducts entirely into the Earth's mantle, whereafter collision ensues, and colliding continents are sutured together. In models o…
Geodynamic modelling of continental subduction beneath oceanic lithosphere Open
Subduction of an oceanic plate beneath either an oceanic, or a continental, overriding plate requires two main conditions to occur in a steady state: i) a high enough subduction rate (~5 cm/yr, Schellart in print); and ii) a weak (efficien…
2D numerical modelling of Tethyan-type ophiolite emplacement: The role of overriding plate age, serpentinization, and OCT width. Open
Ophiolites are exposed remnants of oceanic lithosphere that are emplaced onto a continental domain, and Tethyan-type ophiolites, specifically, are those that are emplaced within a continental passive margin. The emplacement process for thi…
Subduction invasion polarity switch (SIPS): A new mechanism of subduction initiation, with an application to the Scotia Sea region Open
The initiation of subduction remains an enigmatic process and a variety of conceptual models has been proposed to explain such initiation. Conceptual models have been tested with geodynamic models and have been applied to various subductio…
Subduction invasion polarity switch from the Pacific to the Atlantic Ocean: A new geodynamic model of subduction initiation based on the Scotia Sea region Open
Subduction zones and their associated slabs are the main drivers of plate tectonics and mantle flow, but how these zones initiate remains enigmatic. In the Scotia Sea region, subduction started in the Late Cretaceous/Early Cenozoic in a pr…
Sustained indentation in 2-D models of continental collision involving whole mantle subduction Open
SUMMARY Continental collision zones form at convergent plate boundaries after the negatively buoyant oceanic lithosphere subducts entirely into the Earth’s mantle. Consequently, orogenesis commences, and the colliding continents are suture…