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en.wikipedia.org/wiki/Rhyolite

Rhyolite is an igneous, volcanic rock, of felsic (silica-rich) composition It may have any texture .... Mind Over Magma: The Story of Igneous Petrology. Princeton  ...

www.soest.hawaii.edu/coasts/lecture/gg101/powerpoints/Volcanoes.pdf

Jan 31, 2013 ... Rhyolitic lava flow. Rhyolitic magma erupts catastrophically because it has high gas content. It is viscous and therefore traps gas, builds ...

www.tulane.edu/~sanelson/geol204/volcan&magma.htm

Sep 14, 2015 ... Thus, basaltic magmas tend to be fairly fluid (low viscosity), but their viscosity is still 10,000 to 100,0000 times more viscous than water.

encyclopedia2.thefreedictionary.com/rhyolitic+magma

A type of magma formed by differentiation from basaltic magma in combination with assimilation of siliceous material, or by melting of portions of the earth's sialic  ...

www.geology.sdsu.edu/how_volcanoes_work/andesiterhyolite_lava.html

In some cases, thick rhyolitic lavas will cool as glassy obsidian flows, ... As demonstrated above, felsic magmas will either (1) erupt explosively to produce ...

geology.com/rocks/rhyolite.shtml

Rhyolite is an extrusive igneous rock formed during eruptions of granitic magma. Pumice, obsidian, and tuff are associated rock types.

www.nature.com/articles/nature08458

Oct 8, 2009 ... Rapid ascent of rhyolitic magma at Chaitén volcano, Chile. Jonathan M. Castro & Donald B. Dingwell. Centre National de la Recherche ...

flexiblelearning.auckland.ac.nz/rocks_minerals/rocks/rhyolite.html

If rhyolite magma is gas rich it can erupt explosively, forming a frothy solidified magma called pumice (a very lightweight, light-coloured, vesicular form of rhyolite) ...

www.geosociety.org/gsatoday/archive/24/12/article/i1052-5173-24-12-4.htm

GSA Today science article, December 2014. Dynamics of a large, restless, rhyolitic magma system at Laguna del Maule, southern Andes, Chile.

volcanoes.usgs.gov/volcanoes/yellowstone/yellowstone_geo_hist_53.html

May 2, 2012 ... The enormous outpouring of magma, 280 to 2,450 km3 during each ... area produced rhyolitic and basaltic rocks—large rhyolite lava flows and ...