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The slower a mineral cools, the larger the crystals it forms. Rapid cooling produces fine grained rocks / minerals, while slow cooling produces large grained rocks / minerals.
In the case of igneous rocks, for example, you can tell whether it was formed inside the earth and underwent slow cooling (like granite) or was formed during extrusion from the earth, (such as during a volcanic eruption), which would expose it to water or air, cooling it rapidly.
If it has large, chunky crystals, in is an intrusive rock, formed inside the earth, and cooled very slowly. If it is very fine grained or has no grains, (such as obsidian), it is an extrusive rock.
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Rapid cooling of lava in which tiny crystals form results in what kind of texture?
Rapid cooling of lava in which tiny crystals form results in a glassy texture.
What is the texture of an igneous rock when it was formed from cooling maga deep beneath the earth?
It is likely to have a coarse-grained texture.
How is the size of mineral crystals in igneous rock related to the rate at which they cool?
When igneous rocks cool quickly, they have small crystals and have a texture that may be described as aphanitic. When igneous rocks cool slowly, they have much larger crystals and have a texture that may be described as phaneritic or pegmatitic.
The size of the mineral crystals found in an igneous rock is directly related to the?
the rate melted rock cools.
What factors can effect the texture of a igneous rock?
The texture is determined by the rate it takes the molten to cool to form the rock.
How is the texture of an igneous rock related to the rate which it cooled?
Quick cooling of magma results in small crystal formation. Slow cooling magma results in larger crystals.
What is the texture of cooling magma?
smooth
Rapid cooling of lava in which tiny crystals form results in what kind of texture?
Rapid cooling of lava in which tiny crystals form results in a glassy texture.
What is the resulting texture of an extremley rapid cooling of lava in which no crystals form?
They are said to have a glassy or vitreous texture.
What determine the texture of igneous Rock?
The texture is mostly determined by the time spent in cooling from magma or lava. The quicker the transition from molten to solid, the finer the texture.
What is the texture of an igneous rock when it was formed from cooling maga deep beneath the earth?
It is likely to have a coarse-grained texture.
What texture represents a single long period cooling and crystallization?
phaneritic
What texture represents a single long period of cooling and crystallization?
phaneritic
How is the size of mineral crystals in igneous rock related to the rate at which they cool?
When igneous rocks cool quickly, they have small crystals and have a texture that may be described as aphanitic. When igneous rocks cool slowly, they have much larger crystals and have a texture that may be described as phaneritic or pegmatitic.
What factors can effect the texture of a igneous rock?
The texture is determined by the rate it takes the molten to cool to form the rock.
The size of the mineral crystals found in an igneous rock is directly related to the?
the rate melted rock cools.
What is the resulting texture of igneous rock that is formed from extremely rapid cooling lava in which no crystals form?
The texture would be glass-like.
