A review of airborne electromagnetic methods with focus on geotechnical and hydrological applications from 2007 to 2017

E Auken, T Boesen, AV Christiansen - Advances in geophysics, 2017 - Elsevier
The purpose of this review is to report the major advancements that have been made within
the area of airborne electromagnetics (AEM) between 2007 and 2017, with a focus on …

Magnetic effects of hydrothermal alteration in porphyry copper and iron-oxide copper–gold systems: A review

DA Clark - Tectonophysics, 2014 - Elsevier
Magnetic anomaly patterns can be used as a tool for map** lithology, metamorphic zones
and hydrothermal alteration systems, as well as identifying structures that may control …

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 …

Influence of alteration on physical properties of volcanic rocks

A Pola, G Crosta, N Fusi, V Barberini, G Norini - Tectonophysics, 2012 - Elsevier
Physical properties of some weathered/altered volcanic rocks and their variation with the
degree of alteration are described in detail. A series of tests was performed to identify and …

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 …

General characterization of the mechanical behaviour of different volcanic rocks with respect to alteration

A Pola, GB Crosta, N Fusi, R Castellanza - Engineering Geology, 2014 - Elsevier
Physical–mechanical properties and the mechanical behaviour of volcanic rocks are
extremely sensitive to their original structure and successive hydrothermal alteration …

[HTML][HTML] Mechanical behaviour and failure modes in the Whakaari (White Island volcano) hydrothermal system, New Zealand

MJ Heap, BM Kennedy, N Pernin, L Jacquemard… - Journal of Volcanology …, 2015 - Elsevier
Volcanic hydrothermal systems host a prodigious variety of physico-chemical conditions.
The physico-chemical state and mechanical behaviour of rocks within is correspondingly …

Groundwater flow and hydrothermal systems within volcanic edifices: Delineation by electric self‐potential and magnetotellurics

K Aizawa, Y Ogawa, T Ishido - Journal of Geophysical …, 2009 - Wiley Online Library
The imaging of hydrothermal systems within volcanoes is critical in evaluating the nature
and likelihood of future volcanic activity and hazard assessment. In this study, we present a …

The hydrothermal alteration of cooling lava domes

JL Ball, PH Stauffer, ES Calder, GA Valentine - Bulletin of Volcanology, 2015 - Springer
Hydrothermal alteration is a recognized cause of volcanic instability and edifice collapse,
including that of lava domes or dome complexes. Alteration by percolating fluids transforms …

Characteristics, extent and origin of hydrothermal alteration at Mount Rainier Volcano, Cascades Arc, USA: Implications for debris-flow hazards and mineral deposits

DA John, TW Sisson, GN Breit, RO Rye… - Journal of Volcanology …, 2008 - Elsevier
Hydrothermal alteration at Mount Rainier waxed and waned over the 500,000-year episodic
growth of the edifice. Hydrothermal minerals and their stable-isotope compositions in …