a fine-grained igneous rock rich in silica: the volcanic equivalent of granite.
- rhy·o·lit·ic [rahy-uh-lit-ik], /ˌraɪ əˈlɪt ɪk/, adjective
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How to use rhyolite in a sentence
Intrepid travelers can ice climb its namesake feature, hike through glassy frozen caves, or trek through Iceland’s dormant volcanoes and remote rhyolite mountains.
This is shown in the glaciated rock-surfaces of the rim that are covered with layers of pumice and rhyolite.Your National Parks | Enos A. Mills
Granite is an acidic rock corresponding to rhyolite in chemical composition.The Elements of Geology | William Harmon Norton
The oldest volcanic rock appears to be rhyolite, which peers up in two small hills almost smothered beneath the lake deposits.Volcanoes: Past and Present | Edward Hull
Basalt is less siliceous than granite and rhyolite, and contains much more iron, calcium, and magnesium.Geology | William J. Miller
rhyolite and other forms of lava were last spread over the region.Your National Parks | Enos A. Mills
British Dictionary definitions for rhyolite
a fine-grained igneous rock consisting of quartz, feldspars, and mica or amphibole. It is the volcanic equivalent of granite
- rhyolitic (ˌraɪəˈlɪtɪk), adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for rhyolite
A usually light-colored, fine-grained extrusive igneous rock that is compositionally similar to granite. It often includes flow lines formed during the extrusion.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.