Physical volcanology of a voluminous rhyolite lava flow: The Badlands lava, Owyhee Plateau, southwestern Idaho

1996 ◽  
Vol 71 (2-4) ◽  
pp. 129-153 ◽  
Author(s):  
Curtis R. Manley
Keyword(s):  
Lava Flow ◽  
Rhyolite Lava ◽  
Physical Volcanology

scholarly journals Emplacing a Cooling-Limited Rhyolite Lava Flow: Similarities with Basaltic Lava Flows

2017 ◽  
Vol 5 ◽  
Author(s):  
Nathan Magnall ◽  
Mike R. James ◽  
Hugh Tuffen ◽  
Charlotte Vye-Brown
Keyword(s):  
Lava Flow ◽  
Lava Flows ◽  
Basaltic Lava ◽  
Rhyolite Lava

scholarly journals Emplacement of the Rocche Rosse rhyolite lava flow (Lipari, Aeolian Islands)

2018 ◽  
Vol 80 (5) ◽  
Author(s):  
Liam A. Bullock ◽  
Ralf Gertisser ◽  
Brian O’Driscoll
Keyword(s):  
Lava Flow ◽  
Aeolian Islands ◽  
Rhyolite Lava

scholarly journals The origin and evolution of breakouts in a cooling-limited rhyolite lava flow

2018 ◽  
Vol 131 (1-2) ◽  
pp. 137-154 ◽  
Author(s):  
Nathan Magnall ◽  
Mike R. James ◽  
Hugh Tuffen ◽  
Charlotte Vye-Brown ◽  
C. Ian Schipper ◽  
...  
Keyword(s):  
Lava Flow ◽  
Origin And Evolution ◽  
Rhyolite Lava

scholarly journals Conduit system, degassing, and flow dynamics of a rhyolite lava: A case study of the Shiroyama lava on Himeshima Island, Japan

Volcanica ◽  
2021 ◽  
Vol 4 (2) ◽  
pp. 107-134
Author(s):  
Kuniyuki Furukawa ◽  
Koji Uno ◽  
Yu Horiuchi ◽  
Shintaro Murohashi ◽  
Motohiro Tsuboi
Keyword(s):  
Magnetic Susceptibility ◽  
Lava Flow ◽  
Structural Variation ◽  
Flow Dynamics ◽  
Bubble Coalescence ◽  
Geological Investigation ◽  
Rhyolite Lava ◽  
Gas Removal ◽  
Conduit System

This study presents a description of a rhyolite lava-forming eruption, including the conduit system, degassing history during the lava flow dynamics. We examined the Pleistocene Shiroyama rhyolite lava on Himeshima Island, Japan. The lava is mainly characterized by locally developed obsidian. Based on the structural variation, the obsidian lithofacies correspond to the shallow conduit. The geological investigation and FTIR analyses showed that gas removal from the conduit magma proceeded via vesiculation, fracturing, and brecciation, allowing formation of the dense obsidian. Since the lava originally maintained some extent of water, the lava effervesced just after the effusion. This vesiculation resulted in pervasive bubble coalescence and the formation of abundant permeable pathways. The volcanic gasses escaped via those pathways, allowing collapse of the bubbles and deflation of the lava. AMS (anisotropy of magnetic susceptibility) results indicate that the lava spread concentrically.

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