Rhyolite And Granite Are Alike In That They Both Are

They have essentially the same composition.

Rhyolite and granite are alike in that they both are. The difference is that granite sits on the plutonic diagram and rhyolite sits on the volcanic diagram. The rock received its name from german geologist ferdinand von richthofen better known as the red baron a world war i flying ace the word rhyolite comes from the greek word rhýax a stream of lava with the suffix ite given to rocks. Larger crystal size in one of two igneous rocks of similar composition usually indicates that the rock with the larger crystals cooled for. Granite and rhyolite have essentially the same composition.

Rhyolite is similar in composition and appearance to granite but it forms through a. They have very similar compositions but one is erupted onto earth s surface and the other crystallises at. Both are felsic igneous rocks meaning they form from molten rock that is rich in silica sodium potassium and aluminum. Rhyolite extrusive igneous rock that is the volcanic equivalent of granite most rhyolites are porphyritic indicating that crystallization began prior to extrusion.

In such cases the rock may consist principally of well developed large single crystals phenocrysts at the time of extrusion. According to the earth science reference tables rhyolite and granite are alike in that they both are. So they have a similar composition but one is volcanic and the other is plutonic. Both granite and rhyolite are felsic igneous rocks formed from very viscous silica rich magma.

The difference between them is that granite cools slowly. Crystallization may sometimes have begun while the magma was deeply buried.