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Usually they have larger crystals and coarser grain than those formed above ground.

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โˆ™ 2012-07-28 08:34:42
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Q: What are the characteristics of igneous rocks formed underground?
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What is a description of igneous rocks?

Rocks that were formed underground.


What is an igneous rock that was formed underground?

Igneous rocks that are formed underground are called intrusive igneous rocks. They are characterized by large crystals, mostly visible with the naked eye.


Are igneous rocks formed by volcanoes?

Some igneous rocks are formed by volcanism. Others are formed from the solidification of magma underground.


How are igneous rocks formed underground?

Igneous rocks are formed underground from a very hot substance called magma. As magma cools and hardens under extreme pressure, it forms igneous rocks.


Which types of rocks are formed underground?

Igneous, Metamorphic, and Sedimentary rocks


How igneous rocks formed underground?

Igneous rocks are formed underground from a very hot substance called magma. As magma cools and hardens under extreme pressure, it forms igneous rocks.


Which type of igneous rocks are formed underground?

The hard kind


What are igneous rocks that form inside earth called?

Igneous rocks that are formed underground are known as intrusive igneous rocks.Igneous rocks that cool into a solid material are known as extrusive igneous rocks.


How does metamorphic rock formation compare to igneous rock formation?

Igneous rocks are formed in and around volcanos, metamorphic rocks are formed by the partial melting of rocks deep underground.


What do igneous rocks form from?

Igneous rocks [fire rocks] are formed either underground or above ground. Underground they are formed when the melted rock [called magma] deep within the earth becomes trapped in small pockets, and as these pockets of magma cool slowly underground the magma becomes igneous rocks. Igneous rocks are also formed when volcanoes erupt causing the magma to rise above the earth's surface. When magma appears above the earth, it is called lava. Igneous rocks are formed as the lava cools above ground. Examples of igneous rocks are granite, scoria, pumice, obsidian and basalt.


What rocks form underground?

igneous rocks are formed underground as the magama freezes or heats very quickly, thus causing it to solidfy and form rocks


What do igneous rock form?

Igneous rocks [fire rocks] are formed either underground or above ground. Underground they are formed when the melted rock [called magma] deep within the earth becomes trapped in small pockets, and as these pockets of magma cool slowly underground the magma becomes igneous rocks. Igneous rocks are also formed when volcanoes erupt causing the magma to rise above the earth's surface. When magma appears above the earth, it is called lava. Igneous rocks are formed as the lava cools above ground. Examples of igneous rocks are granite, scoria, pumice, obsidian and basalt.

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