Igneous Rock

Igneous rock is formed from cooled magma or lava. The magma turns solid as it cools, and eventually becomes rock. It is sometimes crystallized.

4,222 Questions
Igneous Rock

How do magma turns into extrusive igneous rock?

Lava can turn into igneous rock in 2 ways. When the lava cools to a hardening point inside the volcano it is called intrusive igneous rock. When lava cools outside of the volcano it is called extrusive igneous rock.

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Igneous Rock

What is the difference between metamorphic and igneous rocks?

Some metamorphic rock has foliation, the banding in the rock

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Science
Geology
Rocks and Minerals
Igneous Rock

How are igneous rocks with crystals formed?

The magma in the earth slowly cools, as it is cooling pockets of air will develop, in those pockets crystals will start to form.

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Science
Geology
Earth Sciences
Igneous Rock

What rock is formed from cooled magma?

Igneous rock is formed from the solidification of magma as it cools.

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Geology
Sedimentary Rock
Igneous Rock

What are the three main groups of rocks?

Rocks are categorized into three distinct types based on their method of formation. The three types are igneous, sedimentary, and metamorphic. Early in Earth's history, all rock was igneous, having formed from the cooling of melt on the surface.

An igneous rock is simply a rock that has solidified from magma or lava upon cooling. Igneous rocks can be intrusive (solidified from magma underground) or extrusive (solidified from lava at or near the surface). The bulk of Earth's crust is formed from igneous rock. Examples of igneous rock include basalt, obsidian, rhyolite, granite, diorite, gabbro, and pumice.

A sedimentary rock is one that is formed by the accumulation of small to large sediment particles derived from all three types of rock and in some cases organic material, and undergoes compaction, cementation, or evaporation from/precipitation from a saturated mineral solution. Sedimentary rock is classified as organic, (derived from organisms), clastic (formed from any size particle of preexisting rock), or non-clastic (also referred to as chemical), where the sedimentary rock is formed from the evaporation of a solution that is saturated with mineral compounds. Examples of organic sedimentary rocks are coal and limestone. Examples of clastic sedimentary rocks are conglomerate and shale. Examples of non-clastic or chemical sedimentary rocks are rock gypsum and rock salt.

A metamorphic rock is an igneous, sedimentary, or another metamorphic rock that has either been squeezed by incredible pressures deep underground and/or has been exposed to very high temperatures, altering its structure, mineral alignment, or chemical composition. Metamorphic rocks are classified as contact (from proximity to a magmatic intrusion) or regional (resulting from deep burial and pressures from plate collisions Metamorphic rock is also classified as foliated or non-foliated, foliation being the parallel alignment of the constituent minerals in bands that are perpendicular to the applied pressure. Metamorphic rocks can also be described by the grade of metamorphism which has taken place from low to high, high being the closest to the next stage in the rock cycle, melting. Examples of metamorphic rock are slate, quartzite, marble, phyllite, schist, and gneiss.

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Geology
History of Science
Igneous Rock

What rock can float?

WHAT ROCK

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Igneous Rock

Name 2 types of igneous rock?

Granite and basalt are the most common types of igneous rock. Igneous rock types, or classifications, also include those that are intrusive and extrusive. Intrusive igneous rock is formed from the solidification of slow cooling magma below the surface. Extrusive igneous rock is formed for the solidification of rapidly cooling lava at or near the surface.

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Igneous Rock

Why is gold often found in veins of quartz that are in and around igneous intrusions?

It is released at the end of magma crystallization in a hot, mineral-rich fluid that fills cracks and voids in the surrounding rock. This fluid solidifies to form metal-rich quartz veins.

by aidan

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Geology
Volcanoes
Igneous Rock

How long does it take lava to become a rock?

The lava must cool to become a rock, and the cooling time can vary greatly because of many variables in the process. These variables include the temperature of the air around the lava and the contents of the the lava. The cooling process usually takes a very long time.

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Geology
Igneous Rock

Can an igneous rock become another igneous rock if so how?

Yes, that can happen. The surface of the Earth is being reworked by the processes of weathering and erosion. This means that surface rocks of ALL types are broken down into their components and deposited as sediments that become buried by yet more sediments.

The Earth's plate tectonic movements can take these sediments deep into the mantle of the Earth where they are melted to form new magmas that can make their way up to the surface to form new igneous rocks. This is called the rock cycle.

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Geology
Volcanoes
Igneous Rock

What is molten rock beneath the earths surface called?

ghdjhjh

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Igneous Rock

Is obsidian bulletproof?

no

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Geology
Igneous Rock

What can you tell about an igneous rock that has a fine texture?

It is most likely extrusive.

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Geology
Igneous Rock

What do the 3 beakers represent in the formation of igneous rock?

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Igneous Rock

Nefertiti made of granite were lowered to seal the rooms after burial?

The correct sentence is, 'Porticullises made of granite were lowered to seal the room after burial.'

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Science
Geology
Rocks and Minerals
Igneous Rock

What is the difference between intrusive and extrusive igneous rock?

Both are formed from the crystallization of minerals caused by the cooling of magma.

Intrusive igneous rocks cooled below the surface of the planet, however, and generally display larger crystals due to the increased amount of time spent at mineral crystallization temperatures from the insulating effect of surrounding material.

Examples: granite, gabbro, diorite, peridotite.

Extrusive rocks are formed from magma at or above the surface of the planet, and generally display smaller mineral crystals, or no crystals at all, because of the rapid cooling environment in which they form. Chemically, an intrusive and extrusive rock could be identical, the only difference being the size of the mineral crystals they contain.

Examples: obsidian, rhyolite, pumice, scoria, basalt.

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Igneous Rock

Is it true that the process that breaks down granite into sediment is deposition?

true

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Igneous Rock

Is granite man-made?

There are man made imitations but real granite is a natural rock.

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Igneous Rock

Are igneous rocks strong?

B

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Igneous Rock

Crystal size in igneous rocks is determined by?

the rate melted rock cools.

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Igneous Rock

Igneous rock texture refers to size?

crystal

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Igneous Rock

Can you give me a acrostic for igneous?

ice

green

nine

eleven

out

up

sound

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Igneous Rock

What gives basalt its dark color?

Basalt is dark largely due to the presence of dark-colored pyroxene minerals.

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Igneous Rock

How does sedimentary rock change into igneous rock?

Sedimentary rock can be changed into igneous rock by undergoing melting and then solidification. At a subduction zone (at a convergent plate boundary, where one plate slides beneath another), layers of sedimentary rock will be assimilated into the mantle. Some areas may undergo enough heating to actually melt, especially if there is water or carbon dioxide trapped in the rock. If this rock later makes it to the surface and cools, it will become an igneous rock. Another area where sedimentary rock could be changed into igneous rock is on the interior of a composite volcano -- The heat and force of the magma could break off chunks of volcanic welded tuff, causing it to melt. If the volcano then erupts, the former sedimentary rock would be incorporated into the lava and solidify into igneous rock.

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Igneous Rock

How much is basalt worth?

nothing

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