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 …

[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 …

Scaling-up dynamic elastic logs to pseudo-static elastic moduli of rocks using a wellbore stability analysis approach in the Marun oilfield, SW Iran

E Jamshidi, P Kianoush, N Hosseini, A Adib - Scientific Reports, 2024 - nature.com
Wellbore stability analysis is a critical component of petroleum engineering, evaluating the
risks of sanding, reservoir compaction, and casing failures. Laboratory rock mechanical …

[HTML][HTML] First evidence of a geodetic anomaly in the Campi Flegrei caldera (Italy) ground deformation pattern revealed by DInSAR and GNSS measurements during …

F Giudicepietro, F Casu, M Bonano, C De Luca… - International Journal of …, 2024 - Elsevier
Campi Flegrei caldera is an Italian high-risk volcano experiencing a progressively more
intense long-term uplift, accompanied by increasing seismicity and geochemical emissions …

Mid-ocean ridge unfaulting revealed by magmatic intrusions

JA Olive, G Ekström, WR Buck, Z Liu, J Escartín… - Nature, 2024 - nature.com
Mid-ocean ridges (MORs) are quintessential sites of tectonic extension,,–, at which
divergence between lithospheric plates shapes abyssal hills that cover about two-thirds 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 …

Quantifying the role of hydrothermal alteration in creating geothermal and epithermal mineral resources: The Ohakuri ignimbrite (Taupō Volcanic Zone, New Zealand)

MJ Heap, DM Gravley, BM Kennedy, HA Gilg… - Journal of Volcanology …, 2020 - Elsevier
Hydrothermal fluids can alter the chemical and physical properties of the materials through
which they pass and can therefore modify the efficiency of fluid circulation. The role of …

Multi‐Temporal InSAR, GNSS and Seismic Measurements Reveal the Origin of the 2021 Vulcano Island (Italy) Unrest

F Di Traglia, V Bruno, F Casu, O Cocina… - Geophysical …, 2023 - Wiley Online Library
Abstract La Fossa Caldera at Vulcano (Italy) has been showing signs of unrest since
September 2021. To investigate this phenomenon, we conducted an analysis of geodetic …

Characterizing lithological, weathering, and hydrothermal alteration influences on volcanic rock properties via spectroscopy and laboratory testing: a case study of …

LN Schaefer, G Kereszturi, BM Kennedy… - Bulletin of …, 2023 - Springer
The geomechanical characterization of volcanic material has important implications for
geothermal and mineral exploration, engineering design, geophysical signals of volcano …

Trapdoor fault activation: A step toward caldera collapse at Sierra Negra, Galápagos, Ecuador

T Shreve, F Delgado - Journal of Geophysical Research: Solid …, 2023 - Wiley Online Library
Abstract The 2018 Sierra Negra eruption resulted in meter‐scale subsidence due to basaltic
magma extraction from a deflating reservoir. The eruption was also characterized by dike …