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Rocks formed in volcanoes from magma.

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12y ago

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What do you call rocks that have been formed from the hot molten material within the earth's crust that has cooled and hardened?

Igneous rocks are formed by the solidification of molten materials.


Why don't igneous rocks look like magma rocks if igneous rock is formed from magma?

Because that is the very definition of igneous rock.


What is the definition of Igneous Rock?

Igneous rock is a type of rock that forms from the cooling and solidification of magma or lava. It is classified based on its texture (coarse or fine-grained) and composition (silica content and mineralogy). Examples include granite, basalt, and obsidian.


When molten rocks cools what rocks form?

igneous rocks


What are igneous rocks that form over the surface?

Rhyolititcen rocks.


Are igneous rocks made up of igneous rocks?

Sedimentary rock can be made up partially of igneous clasts, but igneous rock is igneous rock.


Are volcanic rocks igneous rocks?

Yes. Volcanic rocks are extrusive igneous rocks.


Why are igneous are called primary rocks?

Igneous rocks


Are sedimentary rocks are harder than igneous rocks?

No, igneous rocks are harder than sedimentary rocks on average.


How do fine- grained igneous rocks from?

extrusive igneous rocks =/


What kind of igneous rocks for on earths surface?

Some do. These are called extrusive igneous rocks. However a large portion of igneous rocks form beneath the surface. These are intrusive igneous rocks.


What is the clear definition for acidic energy?

Acidic mean designating or of igneous rocks with more than 66% silica.