Benjamín van Wyk de Vries

Laboratoire Magmas et Volcans

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Valentín R. Troll

Centre of Natural Hazards and Disaster Science

Audray Delcamp

Vrije Universiteit Brussel

Matthieu Kervyn

Vrije Universiteit Brussel

Eoghan P. Holohan

University College Dublin

Michael Petronis

New Mexico Highlands University

P. K. Byrne

Washington University in St. Louis

Lucie Mathieu

Université du Québec à Chicoutimi

Andrew Harris

Centre National de la Recherche Scientifique

Pablo Grosse

Centro Científico Tecnológico - San Juan

Viktor Vereb

Laboratoire Magmas et Volcans

Cooperative Institutions

Centre National de la Recherche Scientifique

Laboratoire Magmas et Volcans

Université Clermont Auvergne

Institut de Recherche pour le Développement

Istituto Nazionale di Geofisica e Vulcanologia

Clermont Université

Observatoire de Physique du Globe de Clermont-Ferrand

University of the Philippines Diliman

The Open University

University of Milano-Bicocca

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Structural analysis of the early stages of catastrophic stratovolcano flank-collapse using analogue models

Bulletin of Volcanology (2010)

S. Daniel Andrade Benjamín van Wyk de Vries

Flank

Stratovolcano

10.1007/s00445-010-0363-x

Cite

Citations (56)

3D imaging of volcano gravitational deformation by computerized X-ray micro-tomography

Geosphere (2010)

Matthieu Kervyn Matthieu Boone Benjamín van Wyk de Vries Élodie Lebas Veerle Cnudde

Analogue models are commonly used to gain insights into large-scale volcano-tectonic processes. Documenting model surface topography and the three-dimensional (3D) aspect of deformation structures remains the greatest challenge in understanding the simulated processes. Here we present the results of volcano analogue models imaged with an X-ray computerized micro-tomography (μCT) system developed at the Ghent University Centre for Tomography (UGCT). Experiments simulate volcano deformation due to gravitational loading over a ductile layer, a process affecting many natural volcanoes built over a sedimentary substratum. Results show that μCT is able to provide a 3D reconstruction of the model topography with unprecedented resolution. Virtual cross sections through reconstructed models enable us to map the main structures at depth and to document the deformation of the brittle-ductile interface due to contrasting X-ray attenuation. Results for lateral spreading and vertical sagging into thin and thick ductile layers, respectively, are illustrated for circular cones and elongated ridges. Results highlight structural patterns not seen in previous models, such as: 1) the 3D form of a polygonal brecciated zone at the center of spreading cones; 2) the complete lack of such a zone in sagging cones; and 3) relay structures between graben-bounding faults in spreading cones. In addition, detailed imaging of tension gashes and of the flexure surface below sagging cones enables the 3D strain distribution to be explored. Experiments with non-cohesive and low cohesion granular materials present striking differences in surface topography and fault characteristics. Despite limitations associated with the scan duration, μCT reconstruction of analogue models appears a powerful tool for better understanding the complex 3D deformation associated with volcano-tectonic processes.

10.1130/ges00564.1

Cite

Citations (19)

Emplacement of Zebín Hill, Jičín Volcanic Field, Bohemian Paradise, Czech Republic: Anisotropy of Magnetic Susceptibility, Ground Magnetometry, Electric Resistivity Tomography, and Paleomagnetic Data

AGU Fall Meeting Abstracts (2014)

Michael Petronis Rapprich J. Valenta J. Leman A. R. Brister

Source

Cite

Citations (0)

Sector collapse forming at Casita volcano, Nicaragua

Geology (2000)

Benjamín van Wyk de Vries N. Kerle D. N. Petley

10.1130/0091-7613(2000)028<0167:scfacv>2.3.co;2

Cite

Citations (15)

Landslides and spreading of oceanic hot-spot and arc shield volcanoes on Low Strength Layers (LSLs): an analogue modeling approach

Journal of Volcanology and Geothermal Research (2005)

Jean-François Oehler Benjamín van Wyk de Vries Philippe Labazuy

Subaerial

Shield volcano

Slumping

10.1016/j.jvolgeores.2004.11.023

Cite

Citations (65)

Communicating geoscience through geoheritage: the chaîne des puys and limagne fault Unesco world heritage project

HAL (Le Centre pour la Communication Scientifique Directe) (2014)

C. Olive-Garcia Benjamín van Wyk de Vries

Geopark

Source

Cite

Citations (0)

The Quaternary volcanic rocks of the northern Afar Depression (northern Ethiopia): Perspectives on petrology, geochemistry, and tectonics

Journal of African Earth Sciences (2015)

Miruts Hagos Christian Koeberl Benjamín van Wyk de Vries

Flood basalt

Mantle plume

Petrogenesis

Fractional crystallization (geology)

Incompatible element

Shield volcano

10.1016/j.jafrearsci.2015.11.022

Cite

Citations (23)

Unzipping Long Valley: An explanation for vent migration patterns during an elliptical ring fracture eruption

Geology (2008)

Eoghan P. Holohan Valentín R. Troll Benjamín van Wyk de Vries John J. Walsh Thomas R. Walter

Long Valley caldera, California, formed during the cataclysmic Pleistocene eruption of the Bishop Tuff. Previous stratigraphic and petrologic studies of this eruption deciphered an intriguing pattern of vent migration, thought to mirror the lateral propagation (“unzipping”) of magma-tapping ring fractures during caldera collapse. From scaled analog models, we show that this unzipping pattern was intrinsically related to the high plan-view ellipticity of the precollapse magma chamber roof. We also provide a first-order kinematic explanation for the systematic location of initial elliptical roof failure and for the lateral propagation of highly elliptical ring fractures.

Caldera

Magma chamber

10.1130/g24329a.1

Cite

Citations (35)

Dynamics and physical parameters of the Lastarria debris avalanche, Central Andes

Journal of Volcanology and Geothermal Research (2020)

Inés Rodríguez Jerson Páez M. S. Van Wyk de Vries Benjamín van Wyk de Vries Benigno Godoy

Rockslide

Debris flow

Mass movement

Volcanic hazards

10.1016/j.jvolgeores.2020.106990

Cite

Citations (12)

Sub-volcanic slope influencing the development of major structures at volcanoes during strike-slip faulting

EGUGA (2014)

S. Daniel Andrade Benjamín van Wyk de Vries Claude Robin B. Pascal

The scaled experiments presented here show that the dip-angle and dip-direction of the subvolcanic slopes can systematically and significantly change the deformation patterns developed by the volcanic edifice during strikeslip faulting. When the dip-direction of the sub-volcanic slope and the strike of the fault are nearly parallel, an increased development and concentration of the deformation on the down-slope side of the volcanic cone occurs. In medium to long-term, this would imply again a tendency of major volcanic structures growing in a sub-parallel trend with respect to the strike of the fault, but with one preferred direction: that of the dip-direction. In the experiments, the dip-direction of the sub-volcanic slope was set progressively oblique, up to perpendicular, with respect to the strike of the fault by: 1) rotating in the same sense as the strike-slip fault, or 2) rotating in the opposite sense as the fault. In both cases, the downslope side of the volcanic cone still concentrates the deformation, but the deformed sectors progressively rotate which results in a structural development (construction and destruction) of the edifice occurring clearly oblique with respect to the strike of the fault. Imbabura volcano (Ecuador) is traversed by the strike-slip El Angel-Rio Ambi fault, whose sense of movement (left- or right-lateral) has not been clearly established yet. Aditionally, Imbabura has been constructed on the NW, medium to lower flank of the neighbor Cubilche volcano. The application of the experimental results presented above to the case of Imbabura volcano helps to understand the particular structure of this volcano which displays a complex history of construction and destruction events. Additionally, the experiments strongly suggests that the El Angel-Rio Ambi fault is left-lateral.

Volcanic cone

Magnetic dip

Source

Cite

Citations (0)