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Marie Estelle Solange Violay

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Related publications (61)

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Parametric analysis of the elastohydrodynamic lubrication efficiency on induced seismicity

Marie Estelle Solange Violay, Chiara Cornelio

During reservoir stimulations, the injection of fluids with variable viscosities can trigger seismicity. Several fault lubrication mechanisms have been invoked to explain the dynamic stress drop occurring during those seismic events. Here, we perform a par ...

2020

Origin of the Co‐Seismic Variations of Elastic Properties in the Crust: Insight From the Laboratory

Marie Estelle Solange Violay, François Xavier Thibault Passelègue, Mateo Alejandro Acosta, Federica Paglialunga

Seismological observations highlighted that earthquakes are often followed by changes in elastic properties around the fault zone. Here, we studied the origin of these variations using stick-slip experiments on saw-cut granite samples presenting different ...

2021

Alteration's Control on Frictional Behavior and the Depth of the Ductile Shear Zone in Geothermal Reservoirs in Volcanic Arcs

Marie Estelle Solange Violay, Barnaby Padraig Fryer, Gabriel Gérard Dominique Meyer, Florian Till Jermann

The majority of geothermal energy is produced in tectonically active volcanic-arc regions due to their high geothermal gradients. Reservoirs in these settings are often stratified with smectite/kaolinite-, illite-, and chlorite-rich zones, in order of incr ...

AMER GEOPHYSICAL UNION2025

Earthquake Nucleation along Faults with Heterogeneous Weakening Rate

Jean-François Molinari, Marie Estelle Solange Violay, Thibault Didier Roch, Mathias Alexandre David Lebihain

The transition from quasi-static slip growth to dynamic rupture propagation constitutes one possible scenario to describe earthquake nucleation. If this transition is rather well understood for homogeneous faults, how the friction properties of multiscale ...

2021

Experimental plastic reactivation of pseudotachylyte‐filled shear zones

Marie Estelle Solange Violay, François Xavier Thibault Passelègue

Pseudotachylytes are fine‐grained fault rocks that solidify from melt that is produced in fault zones during earthquakes. Exposed sections of natural fault zones reveal evidence of post‐seismic plastic deformation (i.e. reactivation) of pseudotachylyte, wh ...

2021

Off-fault deformation feedback and strain localization precursor during laboratory earthquakes

Marie Estelle Solange Violay, Carolina Giorgetti, Gabriel Gérard Dominique Meyer, Simon Guérin-Marthe

Recent large-scale seismological observations have shown that off-fault strain localization and foreshock migration could serve as an early warning of an impending earthquake. However, this process is still largely unknown. In this study, state-of-the-art ...

Springer Science and Business Media LLC2024

Do scaly clays control seismicity on faulted shale rocks?

Marie Estelle Solange Violay, Luis Felipe Orellana Espinoza

2018

Porosity evolution at the brittle-ductile transition in the continental crust: Implications for deep hydro-geothermal circulation

Marie Estelle Solange Violay, Mateo Alejandro Acosta, Michael Heap

Recently, projects have been proposed to engineer deep geothermal reservoirs in the ductile crust. To examine their feasibility, we performed high-temperature (up to 1000 degrees C), high-pressure (130 MPa) triaxial experiments on granite (initially-intact ...

Springer Nature2017

Physical characterization of fault rocks within the Opalinus Clay formation

Marie Estelle Solange Violay, Luis Felipe Orellana Espinoza, Christophe Nussbaum

Near-surface disposal of radioactive waste in shales is a promising option to safeguard the population and environment. However, natural faults intersecting these geological formations can potentially affect the long-term isolation of the repositories. Thi ...

Nature Research2022

How Stress Biaxiality Controls Crack Morphology and Apparent Fracture Energy of Dikes and Sills

Marie Estelle Solange Violay, Antoine Guggisberg

The emplacement of dikes and sills plays a crucial role in crustal mechanics. The parameter used to describe their resistance to propagation, fracture energy, remains controversial. Here, we show how different stress biaxiality levels experienced by dikes ...

2025

Petrophysical properties of the Muschelkalk from the Soultz-sous-Forêts geothermal site (France), an important lithostratigraphic unit for geothermal exploitation in the Upper Rhine Graben

Marie Estelle Solange Violay, Michael Heap, Alexandra Roma Larisa Kushnir

2019

Effect of water and rock composition on re-strengthening of cohesive faults during the deceleration phase of seismic slip pulses

Marie Estelle Solange Violay, François Xavier Thibault Passelègue, Chiara Cornelio

2019

Variations in elastic and electrical properties of crustal rocks with varying degree of microfracturation

Marie Estelle Solange Violay, Lucas Xan Pimienta, Luis Felipe Orellana Espinoza

This work aims at investigating the effect of varying degrees of microfracturing on the joint elastic and electrical transport properties of rocks. Different crustal rocks were subjected to Thermal Treatment, expected to induce microfracturing, up to diffe ...

2019

The influence of roughness on experimental fault mechanical behaviour and associated microseismicity

Brice Tanguy Alphonse Lecampion, Marie Estelle Solange Violay, François Xavier Thibault Passelègue, Carolina Giorgetti, Seyyedmaalek Momeni, Barnaby Padraig Fryer

Fault surfaces are rough at all scales, this significantly affecting fault-slip behaviour. However, roughness is only occasionally considered experimentally and then often in experiments imposing a low slip velocity, corresponding to the initiation stage o ...

2022

Evolution in physical properties of quartz-bearing rocks with evolving degree of microfissuration

Marie Estelle Solange Violay, Lucas Xan Pimienta

2018

Contrasting mechanical and hydraulic properties of wet and dry fault zones in a proposed shale-hosted nuclear waste repository

Marie Estelle Solange Violay, Carolina Giorgetti, Luis Felipe Orellana Espinoza

2019

Frictional Properties of Opalinus Clay: Implications for Nuclear Waste Storage

Marie Estelle Solange Violay, Luis Felipe Orellana Espinoza

2018

Dynamic weakening during earthquakes controlled by fluid thermodynamics

Marie Estelle Solange Violay, François Xavier Thibault Passelègue, Mateo Alejandro Acosta

Nature Research2018

A multi-disciplinary view on earthquake science

Marie Estelle Solange Violay

Earthquakes are a natural hazard affecting millions of people globally every year. Researchers are working on understanding the mechanisms of earthquakes and how we can predict them from various angles, such as experimental work, theoretical modeling, and ...

Nature Portfolio2022

HighSTEPS: A High Strain Temperature Pressure and Speed Apparatus to Study Earthquake Mechanics

Marie Estelle Solange Violay, Carolina Giorgetti, Chiara Cornelio, Laurent Gastaldo

2021