The mechanical behaviour and failure modes of volcanic rocks: a review

MJ Heap, MES Violay - Bulletin of Volcanology, 2021 - Springer
The microstructure and mineralogy of volcanic rocks is varied and complex, and their
mechanical behaviour is similarly varied and complex. This review summarises recent …

A pre-landing assessment of regolith properties at the InSight landing site

P Morgan, M Grott, B Knapmeyer-Endrun… - Space Science …, 2018 - Springer
This article discusses relevant physical properties of the regolith at the Mars InSight landing
site as understood prior to landing of the spacecraft. InSight will land in the northern lowland …

Towards more realistic values of elastic moduli for volcano modelling

MJ Heap, M Villeneuve, F Albino… - Journal of volcanology …, 2020 - Elsevier
The accuracy of elastic analytical solutions and numerical models, widely used in
volcanology to interpret surface ground deformation, depends heavily on the Young's …

Brittle creep in basalt and its application to time-dependent volcano deformation

MJ Heap, P Baud, PG Meredith, S Vinciguerra… - Earth and Planetary …, 2011 - Elsevier
Time-dependent brittle deformation is a fundamental and pervasive process operating in the
Earth's upper crust. Its characterization is a pre-requisite to understanding and unraveling …

Microstructural controls on the physical and mechanical properties of edifice‐forming andesites at Volcán de Colima, Mexico

MJ Heap, Y Lavallée, L Petrakova… - Journal of …, 2014 - Wiley Online Library
The reliable assessment of volcanic unrest must rest on an understanding of the rocks that
form the edifice. It is their microstructure that dictates their physical properties and …

The permeability of fractured rocks in pressurised volcanic and geothermal systems

A Lamur, JE Kendrick, GH Eggertsson, RJ Wall… - Scientific reports, 2017 - nature.com
The connectivity of rocks' porous structure and the presence of fractures influence the
transfer of fluids in the Earth's crust. Here, we employed laboratory experiments to measure …

Micro-failure process and failure mechanism of brittle rock under uniaxial compression using continuous real-time wave velocity measurement

Z Wu, Z Wang, L Fan, L Weng, Q Liu - Journal of Central South University, 2021 - Springer
In this study, the micro-failure process and failure mechanism of a typical brittle rock under
uniaxial compression are investigated via continuous real-time measurement of wave …

Saturated heating and quenching of three crustal rocks and implications for thermal stimulation of permeability in geothermal reservoirs

PA Siratovich, MC Villeneuve, JW Cole… - International Journal of …, 2015 - Elsevier
Thermal stimulation is a reservoir enhancement technique that relies on the generation of
permeable fractures by thermal gradients. Replication of thermal stimulation in a controlled …

Damage mechanism and dynamic constitutive model of frozen soil under uniaxial impact loading

F Zhang, Z Zhu, T Fu, J Jia - Mechanics of Materials, 2020 - Elsevier
The dynamic mechanical properties of frozen soil at different temperatures and high strain
rates were tested using a split Hopkinson pressure bar (SHPB), and the variation of the …

High Vp/Vs ratio: Saturated cracks or anisotropy effects?

XQ Wang, A Schubnel, J Fortin… - Geophysical …, 2012 - Wiley Online Library
We measured Vp/Vs ratios of thermally cracked Westerly granite, thermally cracked Carrara
marble and 4% porosity Fontainebleau sandstone, for an effective mean pressure ranging …