Geological controls on geothermal resources for power generation

E Jolie, S Scott, J Faulds, I Chambefort… - Nature Reviews Earth & …, 2021 - nature.com
Threats posed by the climate crisis have created an urgent need for sustainable green
energy. Geothermal resources have the potential to provide up to 150 GWe of sustainable …

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 …

A review of relationship between texture characteristic and mechanical properties of rock

M Askaripour, A Saeidi, P Mercier-Langevin… - Geotechnics, 2022 - mdpi.com
The textural characteristics of rocks influence their petrophysical and mechanical properties.
Such parameters largely control rock mass stability. The ability to evaluate both immediate …

Hydrothermal alteration can result in pore pressurization and volcano instability

MJ Heap, T Baumann, HA Gilg, S Kolzenburg… - …, 2021 - pubs.geoscienceworld.org
The collapse of a volcanic flank can be destructive and deadly. Hydrothermal alteration is
common to volcanoes worldwide and is thought to promote volcano instability by decreasing …

Improved correlation between the static and dynamic elastic modulus of different types of rocks

V Brotons, R Tomás, S Ivorra, A Grediaga… - Materials and …, 2016 - Springer
The relationship between the static and dynamic elastic modulus in rock materials has been
frequently addressed in scientific literature. Overall, when it comes to the study of materials …

[HTML][HTML] Hydrothermally altered shear zones: A new reservoir play for the expansion of deep geothermal exploration in crystalline settings

A Bischoff, MJ Heap, P Mikkola, J Kuva, T Reuschlé… - Geothermics, 2024 - Elsevier
Our study investigates the genesis of granitic reservoirs formed within a brittle shear zone in
central Finland, evaluating their feasibility as deep geothermal targets. We employ a suite of …

Alteration‐induced volcano instability at la Soufrière de Guadeloupe (eastern Caribbean)

MJ Heap, TS Baumann… - Journal of …, 2021 - Wiley Online Library
Volcanoes are unstable structures that deform laterally and frequently experience mass
wasting events. Hydrothermal alteration is often invoked as a mechanism that contributes …

[HTML][HTML] Hydrothermal alteration and physical and mechanical properties of rocks in a volcanic environment: A review

ML Pereira, V Zanon, I Fernandes, L Pappalardo… - Earth-Science …, 2024 - Elsevier
Volcanic rocks are the prominent host rocks in geothermal and volcanic systems in general,
displaying heterogeneity. Although various external factors such as temperature, pressure …