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How would you describe the texture of an igneous rock that formed extremely slowly underground?
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∙ 12y ago
pegmatitic
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How would you best describe the texture of an igneous rock that formed extremely slowly underground?
Coarse
What can you tell about an igneous rock that has a coarse texture?
It is most likely formed underground.
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.
An intrusive igneous rock will have what type of texture?
Intrusive igneous rock has a coarse, visible crystalline texture. Intrusive igneous rocks are formed from slow cooling of magma. The additional time spent in a liquid state allows for the creation of larger mineral crystals. An igneous rock with a coarse texture is said to be phaneritic.
Describe and explain the difference in the crystalline texture of volcanic rock and rock formed from an intrusion?
The texture of intrusive igneous rocks is phaneritic, which is characterized by coarse-grained large crystals that are visible to the naked eye. The texture of volcanic rocks, meanwhile, is porphyritic, which is characterized by fine-grained crystals.
How would you best describe the texture of an igneous rock that formed extremely slowly underground?
Coarse
What can you tell about an igneous rock that has a coarse texture?
It is most likely formed underground.
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.
What could be determined if you knew the texture of an igneous rock?
You could determine whether the rock cooled underground or above the surface.
How can you identify an igneous rock?
Intrusive igneous rock is composed of visible mineral crystals, possessing what is referred to as a phaneritic texture. This is evidence that slow cooling of magma occurred deep underground.
What is the texture of igneous rock?
Phaneritic is the texture of igneous rocks. These types of rocks crystallized slowly.
What observation about an igneous rock would support the inference that the rock cooled slowly underground?
The rock would have visible mineral crystals--a phaneritic texture.
What are the factors that controls most texture in igneous rocks?
magma or lava controls most texture in igneous rock
When igneous rocks solidify what kind of texture do they have?
Crystalline texture.
What texture does and extrusive igneous rock have?
fined grain texture
What size of rock texture refers to igneous rock?
The size of the mineral crystals in an igneous rock determines the rock's texture.
What Mineral alignment in a metamorphic rock usually gives the rock a porphyritic texture?
A porphyritic texture can be a feature of igneous rocks, but 'porphyritic' is not used to describe metamorphic rock texture. Metamorphic rocks can be foliated or non-foliated, terms used to describe mineral alignment or banding, or the lack thereof.
