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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 ...

www.geology.sdsu.edu/how_volcanoes_work/Thumblinks/yellowstone_page.html

Most of the calderas in Idaho are covered with younger basaltic lavas ... Yellowstone Caldera -- The ascent of hotspot-generated basaltic magmas results in ...

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.ncbi.nlm.nih.gov/pubmed/19812671

Nature. 2009 Oct 8;461(7265):780-3. doi: 10.1038/nature08458. Rapid ascent of rhyolitic magma at Chaitén volcano, Chile. Castro JM(1), Dingwell DB.

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 ...