wiki Word:Felsic Lava & Rhyolite Rock |
| PRONOUNCIATION KEY: fel-zic la-va and ri-o-lite ro-ck |
Definition to Felsic Lava: flows at high viscostiy and is extremely explosive, tends to be stickier than othersDefinition to Rhyolite Rock: a light colored rock with the silica |
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FELSIC: Usually occurs when a hot spot in the continental crust erupts.Molten rock that has been expelled from a volcano.
RHYOLITE: Content greater than 68 wieght percent. Is erupted at temperatures of 700 to 850 dergree C. Igneous type of rock.Most likeley found and is a light color such as; light gray, tan, redish, greenish, brown. It forms fromt he rapid cooling of a magma or lava.
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We have been learning about different types of lava such as felsic and mafic. Also we have been learning about different types of sedimentary rock such as shale, sandstone and conglomerate.
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http://www.wisegeek.com/what-is-a-lava-flow.htm and http://volcanoes.usgs.gov/Products/Pglossary/rhyolite.html |
Rhyolite, volcanic rock associated with felsic lava.
Obsidian, volcanic glass cooled from felsic magma.
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| Marissa I | 7th |
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