<em><u>Rhyolite and Andesite are examples of an extrusive igneous rock.
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Further Explanations:
Igneous rock also termed as magmatic and among one of the three types of rocks formed by the freezing and solidification of rocks are rocks formed partial melts of the planets mantle or crust. The process of formation of the igneous rocks would have occurred either by the increase in temperature or by decreases in pressure or by the change in configuration of the soil. These processes occur either on the surface of extrusive rocks or below the intrusive rocks and can form layer covering upto16 km of Earth’s crust volume.
As mentioned above that the extrusive rocks are formed by the deposition of the flow out magma from inside the Earth violently on the surface of the Earth. These extorted magma cools down more quickly on lad than in seawater and within a short time interval led to the formation of Crystals. Rhyolite and Andesite are examples of such igneous rocks.
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Answer Details
Grade: High School
Subject: Geography
Chapter: Volcanoes
Keywords: Igneous rock,magmatic,freezing, solidification,mantle, crust,extrusive rocks,intrusive rocks,magma, seawater,Rhyolite,Andesite
