A compositional tipping point governing the mobilization and eruption style of rhyolitic magma
The most viscous volcanic melts and the largest explosive eruptions on our planet consist of
calcalkaline rhyolites,. These eruptions have the potential to influence global climate. The …
calcalkaline rhyolites,. These eruptions have the potential to influence global climate. The …
Fracture and compaction of andesite in a volcanic edifice
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 …
lava, primarily the porosity and pore size, and the conditions under which it deforms. The …
Probing permeability and microstructure: unravelling the role of a low-permeability dome on the explosivity of Merapi (Indonesia)
ARL Kushnir, C Martel, JL Bourdier, MJ Heap… - Journal of Volcanology …, 2016 - Elsevier
Low permeability dome rocks may contribute to conduit overpressure development in
volcanic systems, indirectly abetting explosive activity. The permeability of dome-forming …
volcanic systems, indirectly abetting explosive activity. The permeability of dome-forming …
[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 …
Blowing off steam: tuffisite formation as a regulator for lava dome eruptions
Tuffisites are veins of variably sintered, pyroclastic particles that form in conduits and lava
domes as a result of localized fragmentation events during gas-and-ash explosions. Those …
domes as a result of localized fragmentation events during gas-and-ash explosions. Those …
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 …
Acid‐induced dissolution of andesite: evolution of permeability and strength
JI Farquharson, B Wild, ARL Kushnir… - Journal of …, 2019 - Wiley Online Library
Volcanic systems often host crater lakes, flank aquifers, or fumarole fields that are strongly
acidic. In order to explore the evolution of the physical and mechanical properties of an …
acidic. In order to explore the evolution of the physical and mechanical properties of an …
Examining rhyolite lava flow dynamics through photo-based 3D reconstructions of the 2011–2012 lava flowfield at Cordón-Caulle, Chile
During the 2011–2012 eruption at Cordón-Caulle, Chile, an extensive rhyolitic flowfield was
created (in excess of 0.5 km 3 in volume), affording a unique opportunity to characterise …
created (in excess of 0.5 km 3 in volume), affording a unique opportunity to characterise …
Conduit dynamics in transitional rhyolitic activity recorded by tuffisite vein textures from the 2008–2009 Chaitén Eruption
The mechanisms of hazardous silicic eruptions are controlled by complex, poorly-
understood conduit processes. Observations of recent Chilean rhyolite eruptions have …
understood conduit processes. Observations of recent Chilean rhyolite eruptions have …
[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 …