Magma fragmentation
B Scheu, DB Dingwell - Reviews in mineralogy and …, 2022 - pubs.geoscienceworld.org
The scientific investigation of magma fragmentation and the development of experiments to
constrain and quantify its mechanisms, dynamics, efficiency and products was ushered in …
constrain and quantify its mechanisms, dynamics, efficiency and products was ushered in …
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 …
aspects of geomaterial mechanics is strain localization. Strain localization is a common …
Petrology of the 2020–21 effusive to explosive eruption of La Soufrière Volcano, St Vincent: insights into plumbing system architecture and magma assembly …
Abstract The 2020–21 eruption of La Soufrière, St Vincent began with extrusion of a viscous
lava dome, which was destroyed upon transition to a major explosive phase. Here we …
lava dome, which was destroyed upon transition to a major explosive phase. Here we …
[HTML][HTML] A reappraisal of explosive–effusive silicic eruption dynamics: syn-eruptive assembly of lava from the products of cryptic fragmentation
Silicic volcanic eruptions range in style from gently effusive to highly explosive, and may
switch style unpredictably during a single eruption. Direct observations of subaerial rhyolitic …
switch style unpredictably during a single eruption. Direct observations of subaerial rhyolitic …
Silicic conduits as supersized tuffisites: Clastogenic influences on shifting eruption styles at Cordón Caulle volcano (Chile)
Understanding the processes that drive explosive-effusive transitions during large silicic
eruptions is crucial to hazard mitigation. Conduit models usually treat magma ascent and …
eruptions is crucial to hazard mitigation. Conduit models usually treat magma ascent and …
[HTML][HTML] A model for permeability evolution during volcanic welding
Volcanic ash and pyroclasts can weld when deposited hot by pyroclastic density currents, in
near-vent fall deposits, or in fractures in volcano interiors. Welding progressively decreases …
near-vent fall deposits, or in fractures in volcano interiors. Welding progressively decreases …
[HTML][HTML] Outgassing through magmatic fractures enables effusive eruption of silicic magma
Several mechanisms have been proposed to allow highly viscous silicic magma to outgas
efficiently enough to erupt effusively. There is increasing evidence that challenges the …
efficiently enough to erupt effusively. There is increasing evidence that challenges the …
A review of the physical and mechanical properties of volcanic rocks and magmas in the brittle and ductile regimes
Y Lavallée, JE Kendrick - Forecasting and planning for volcanic hazards …, 2021 - Elsevier
Volcanic provinces host rocks and magmas subjected to a wide spectrum of conditions from
the occurrence of magmatic, volcanic, structural, tectonic, and hydrothermal activity. The …
the occurrence of magmatic, volcanic, structural, tectonic, and hydrothermal activity. The …
The exposed Mule Creek vent deposits record the structure of a volcanic conduit during a hybrid explosive–effusive eruption
Silicic volcanic eruptions commonly begin with the explosive ejection of pyroclastic material,
before transitioning to gentler effusion-dominated activity. Well-exposed dissected silicic …
before transitioning to gentler effusion-dominated activity. Well-exposed dissected silicic …
Hot sintering of melts, glasses and magmas
FB Wadsworth, J Vasseur… - … in Mineralogy and …, 2022 - pubs.geoscienceworld.org
Magma may fragment as it ascends through the volcanic plumbing system to the Earth
surface, forming volcanic ash and pyroclasts (Scheu and Dingwell 2022, this issue). If the …
surface, forming volcanic ash and pyroclasts (Scheu and Dingwell 2022, this issue). If the …