The microstructure and mineralogy of volcanic rocks is varied and complex, and their
mechanical behaviour is similarly varied and complex. This review summarises recent …

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 …

Permeability of the edifice is one of the key parameters governing eruptive style, magnitude,
and frequency of active stratovolcanoes. This study presents a suite of density and …

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 …

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 …

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 …

In volcanic regions, reliable estimates of mechanical properties for specific volcanic events
such as cyclic inflation-deflation cycles by magmatic intrusions, thermal stressing, and high …

The failure mode of lava—dilatant or compactant—depends on the physical attributes of the
lava, primarily the porosity and pore size, and the conditions under which it deforms. The …

The magmatic-hydrothermal system at Krafla Volcano, North-East Iceland, is an important
source of fluids exploited for geothermal energy. Here, we employ laboratory measurements …

Volcanic rocks and magma display a wide range of porosity and vesicle size, a result of their
complex genesis. While the role of porosity is known to exert a fundamental control on …