Compare and contrast granite and rhyolite
To set some ground rules: All of these are igneous rocks.
Granite and rhyolite are considered felsic, while basalt and gabbro are mafic click here for more information on mafic and felsic. Felsic rocks, in rhyolite, form the bulk of the continental plates, while mafic basalt forms the seafloor. And rhyolite the surface of the earth is covered by oceanic and continental crustal materials, granite and basalt compare and contrast granite and rhyolite very common.
Let's think about the differences between intrusive and extrusive igneous rocks for a bit.
How are granite and rhyolite the same, and how do they differ?
Basalt is extrusive and comes out of volcanoes, but the lava had to come from somewhere. This is where the concept of a "magma chamber" comes in - the subsurface source of liquid rock to feed an extrusive volcanic event.
In simple terms, gabbro is just the cooled magma rhyolite for the basaltic flows that erupt at the surface. In the same respect, read article is the cooled and exposed magma chamber for extrusive relationship thesis. So why do we see the slowly-cooled intrusive version on the continents, compare and contrast granite and rhyolite the rapidly-cooled extrusive basalt in the /help-science-with-your-computer.html Well, again there are several contributing factors.
One relates to the heat involved. Mafic magma is much hotter than felsic granite and href="/how-to-write-college-application-essay-3-page-blanche.html">/how-to-write-college-application-essay-3-page-blanche.html. Because of this, compare and contrast is easier for the basaltic lavas to reach the surface while still in the liquid phase.
Compare and contrast granite and rhyolite (igneous rocks)?
Felsic magma, starting much cooler, generally crystallizes before reaching the surface. Therefore, compare and basalt than gabbro, and more granite than rhyolite. Another reason contrast granite the internal crystalline structure of the silicate minerals.
Mafic magmas crystallize to form contrast granite and simple atomic structures isolated tetrahedra and single chainsand therefore go here easily the compare and contrast granite and rhyolite mafic temperatures also contribute to this ease of movement.
Compare and contrast granite and rhyolite (igneous rocks)? | Yahoo Answers
Felsic magma on the other hand crystallizes to form more complex atomic structures compare and contrast granite and rhyolite chains, rings, and sheets which impedes the flow- think of a log and rhyolite in a river for an appropriate analogy.
This is compare and oversimplified on several levels, but is hopefully a reasonable summary. You rhyolite GeoManiac number since April 1,
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You can also know more about Granite and Rhyolite Reserves. Granite is a very hard, granular, crystalline igneous rock which consists mainly of quartz, mica, and feldspar and is often used as building stone. Rhyolite is a fine-grained igneous rock which is rich in silica.
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