Nicolas Riel
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Unraveling the timing and drivers of Adria's independent motion through kinematic and 3D thermo-mechanical modelling Open
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A bound-constrained formulation for complex solution phase minimization Open
Prediction of mineral phase assemblages is essential to better understand the dynamics of the solid Earth, such as metamorphic processes, magmatism and the formation of mineral ore deposits. While recently developed thermodynamic databases…
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…
Lithium mobilisation during metapelite melting: insights and open questions Open
The growing demand for Lithium – due to its use in modern economies and green energy – is prompting closer examination of all geological processes that control Li mobilisation. For example, while studies on the genesis of enriched peralumi…
A mid-crustal tipping point between silica-undersaturated and silica-oversaturated magmas Open
Alkaline–silicate igneous complexes contain a huge diversity of rock types, ranging from silica-undersaturated (feldspathoid-normative) to silica-oversaturated (quartz-normative) compositions. At present, the controls on the formation of s…
View article: Thermal Structure of a Paleoproterozoic Orogen: A Case Study from the Wutai–Fuping Crustal Section
Thermal Structure of a Paleoproterozoic Orogen: A Case Study from the Wutai–Fuping Crustal Section Open
Exhumed orogenic belts contain the only physical record of the processing of Earth’s crust during tectonic cycles and are, therefore, the critical regions where constraints on geodynamic processes can be developed. Reconstructing metamorph…
Consequences of ridge subduction for the evolution in the Greater Antilles arc Open
The present-day Caribbean region developed since early/mid-Jurassic in three main phases: 1) ~ 180 Ma- rifting of Pangea and formation of a spreading ridge in the Proto-Caribbean, 2) ~150 – 70 Ma- drifting and spreading apart of North and …
Influence of Geometry and Rheology on Convergence Speed in Self-Sustained Andean-Type Subduction Systems Open
In a subduction system where an oceanic lithosphere dips beneath a continental lithosphere, the convergence speed (CS) is predominantly governed by ridge push and slab pull forces. However, numerical models have shown significant sensitivi…
Advances in thermodynamic modelling tools for metamorphic rocks Open
Retrieving the thermodynamic properties of metamorphic rocks such as mineral/melt/fluid fractions, compositions, densities and thermal properties is essential for studying, quantifying, and modelling the reactive thermo-mechanical evolutio…
SUBUTTEC Project: SUBdUcTion triggered Terrestrial Evolution in the Caribbean Open
Subduction zones represent more than half of the total plate boundaries length (38,000 over 64,000km) and cause fast geographic changes by a range of geological processes occurring at local to regional scales such as crustal deformation, v…
Modes of collisional orogenic growth: forward, backward and thermally induced Open
When two continents collide different surface expressions can be produced. Triangular wedges are relatively narrow, while plateaus are high topographic features extending over large areas. Several studies have focused on the transition fro…
Leveraging Differentiable Programming in Julia: Forward and Inversion Modeling of Two-Phase Systems Open
From complex magmatic systems to geothermal reservoirs, fluid-rock dynamics have posed immense modeling hurdles in the Geosciences for decades. These systems are influenced by interactions between magmatic heat sources, fluid flow, host ro…
2D numerical models of passive margin reactivation Open
Subduction is a key driving mechanism in Plate Tectonics, but how it initiates is still poorly understood.Subduction initiation is thought to be a complex and evolving tectonic process. It consists of stages of lithospheric contractional d…
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…
3D thermo-mechanical simulations of the Mediterranean show what controls the motion of Adria Open
The motion of the Adriatic microplate is thought to be highly sensitive to the surrounding subduction zones and the convergence of Africa and Eurasia. However, our understanding of mantle dynamics in the Mediterranean region and its effect…
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…
Fully coupled petrological/thermo-mechanical models of magmatic systems Open
Simulating the chemical evolution of magmatic systems can be done with thermodynamic equilibrium modelling and recently developed melting models do quite a good job of predicting observations and reproducing experiments for a wide range of…
Mantle Dynamics in the Mediterranean and Plate Motion of the Adriatic Microplate: Insights From 3D Thermomechanical Modeling Open
The motion of the Adriatic microplate is thought to be highly sensitive to the surrounding subduction zones and the convergence of Africa and Eurasia. However, our understanding of the mantle dynamics in the Mediterranean region and its ef…
Corrigendum to: Melting of Peridotites through to Granites: a Simple Thermodynamic Model in the System KNCFMASHTOCr, and, a Thermodynamic Model for the Subsolidus Evolution and Melting of Peridotite. Open
We have identified and corrected an algebraic error originally made in the formulation of the thermodynamic model for silicate melt in Holland et al. (2018), J. Petrol., 59, 881–900, article egy048. The error was propagated subsequently in…
View article: Major-Element Geochemistry and Fe3+/ΣFe of Metabasites
Major-Element Geochemistry and Fe3+/ΣFe of Metabasites Open
Metabasites (metamorphosed mafic rocks) are crucial for understanding metamorphic and tectonic processes. Their preservation in exhumed orogenic belts from throughout Earth’s history and the diverse mineral assemblages they form under diff…
GeophysicalModelGenerator.jl: A Julia package to visualise geoscientific data and create numerical model setups Open
Geoscientific data exists in a wide variety of formats. Yet, to make a consistent interpretation of a certain region, it is often helpful to jointly visualise all this data using the same coordinates and compare, for example, seismic tomog…
An unconstrained formulation for complex solution phase minimization Open
Prediction of mineral phase assemblages is essential to better understand the dynamics of the solid Earth, such as metamorphic processes, magmatism and the formation of mineral ore deposits. While recently developed thermodynamic databases…
New Thermodynamic Models for Anhydrous Alkaline-Silicate Magmatic Systems Open
A new thermodynamic model for silicate melt in the Na2O–CaO–K2O–FeO–MgO–Al2O3–SiO2–TiO2–Fe2O3–Cr2O3 model system is presented, building on the tholeiitic through to granitic melt model of Holland et al. (2018) [Journal of Petrology, 59, 88…
Modelling chemical advection during magma ascent Open
Modelling magma transport requires robust numerical schemes for chemical advection. Current numerical schemes vary in their ability to be mass conservative, computationally efficient, and accurate. This study compares four of the most comm…
Using Julia for teaching and research in the Geosciences Open
Julia is a relatively new scientific computing language with which you can write code that is nearly as fast as Fortran or C, but being a dynamic language, it remains very compact. Since the language is newer than say Python, many of the s…
Parametric study for self-sustained Andean-type subduction speed Open
The relation between subduction dynamics, plate rheology and geometry is still not well understood. To numerically assess how subduction convergence velocity develops, a wide range of simulations is required to quantify any correlation bet…
Direct coupling of petrological and thermo-kinematic modelling: application to magmatic chambers Open
Understanding how magmatic systems work is of interest to a wide range of Earth Scientists. One of the key components when studying magmatic systems is the ability to predict stable mineral assemblage. These predictions allow retrieving cr…
Crust-mantle delamination enables continental subduction and flake tectonics: insights from numerical modelling Open
Continental collision occurs when two continents are dragged towards each other by the pull of the attached subducting oceanic lithosphere. Previous geodynamic modeling studies of collisional systems focused on first-order processes (such …