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 …

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 …

Exploring the scale-dependent permeability of fractured andesite

MJ Heap, BM Kennedy - Earth and Planetary Science Letters, 2016‏ - Elsevier
Extension fractures in volcanic systems exist on all scales, from microscopic fractures to
large fissures. They play a fundamental role in the movement of fluids and distribution of …

Strain localization in magmas

Y Lavallée, JE Kendrick - Reviews in Mineralogy and …, 2022‏ - pubs.geoscienceworld.org
One of the most intriguing and (from the point of view of modeling) poorly understood
aspects of geomaterial mechanics is strain localization. Strain localization is a common …

[HTML][HTML] The evolution of pore connectivity in volcanic rocks

M Colombier, FB Wadsworth, L Gurioli, B Scheu… - Earth and planetary …, 2017‏ - Elsevier
Pore connectivity is a measure of the fraction of pore space (vesicles, voids or cracks) in a
material that is interconnected on the system length scale. Pore connectivity is …

A multidisciplinary approach to quantify the permeability of the Whakaari/White Island volcanic hydrothermal system (Taupo Volcanic Zone, New Zealand)

MJ Heap, BM Kennedy, JI Farquharson… - Journal of Volcanology …, 2017‏ - Elsevier
Our multidisciplinary study aims to better understand the permeability of active volcanic
hydrothermal systems, a vital prerequisite for modelling and understanding their behaviour …

Universal scaling of fluid permeability during volcanic welding and sediment diagenesis

FB Wadsworth, J Vasseur, B Scheu… - …, 2016‏ - pubs.geoscienceworld.org
In sedimentary basins and volcanic edifices, granular materials undergo densification that
results in a decrease of porosity and permeability. Understanding the link between porosity …

[HTML][HTML] A universal model for the permeability of sintered materials

FB Wadsworth, J Vasseur, MJ Heap, L Carbillet… - Acta Materialia, 2023‏ - Elsevier
Sintered materials are used as permeable filters and flow controllers, for which a validated
and general model of porosity and permeability is required. Here, we prepare samples built …

Evidence for the development of permeability anisotropy in lava domes and volcanic conduits

JI Farquharson, MJ Heap, Y Lavallée, NR Varley… - Journal of Volcanology …, 2016‏ - Elsevier
The ease at which exsolving volatiles can migrate though magma and outgas influences the
explosivity of a volcanic eruption. Volcanic rocks often contain discrete discontinuities …