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Yes, magmas can be classified as intrusive or extrusive. Intrusive magmas form underground as the magma cools slowly, resulting in large crystals. Extrusive magmas, on the other hand, cool quickly on the Earth's surface, leading to fine-grained or glassy textures like obsidian or basalt.
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Is dacite intrusive or extrusive?
Dacite can be both intrusive and extrusive. Intrusive dacite forms when magma solidifies beneath the Earth's surface, while extrusive dacite forms when lava erupts on the Earth's surface and cools quickly.
How igneous rock classified?
Geologists classify rocks by where they are formed; above ground or under ground
Is magma extrusive or intrusive?
Magma can be either extrusive or intrusive. Extrusive magma forms on the Earth's surface during volcanic eruptions, while intrusive magma forms below the surface and cools slowly to create intrusive igneous rocks.
Why are igneous rocks classified into subcategories of intrusive and extrusive?
That classification is on the basis of there environment of formation.Intrusive form deep into the earth from magma while Extrusive form at the surface from cooling lava flows.
Is marble an extrusive or an intrusive rock?
Neither. The terms intrusive and extrusive apply to igneous rocks; marble is metamorphic.
Are magmas classified as intrusive and extrusive?
Yes, magmas can be classified as intrusive or extrusive. Intrusive magmas cool and solidify beneath the Earth's surface, forming intrusive igneous rocks like granite. Extrusive magmas erupt onto the Earth's surface and solidify quickly, forming extrusive igneous rocks like basalt.
What are the main two types of igneous rocks?
Igneous rocks are classified as either extrusive or intrusive. Extrusive rocks form from lava at or above the ground, and intrusive rocks form from magma below the ground. Granite is intrusive, pumice is extrusive.
Igneous rocks can be classified into which 2 groups?
Intrusive and Extrusive.
How are intrusive classified?
Intrusive features are typically classified as plutonic rocks, especially inside of a volcano. Comparatively, extrusive features are also classified as volcanic rocks.
Is schist an intrusive or extrusive rock?
Neither, Igneous rock is either intrusive or extrusive. Thats what intrusive and extrusive is... A igneous rock.
Are crystals intrusive or extrusive?
extrusive
Is Plutonic intrusive or extrusive?
Intrusive
Is plutonic intrusive extrusive?
Intrusive
Is dacite intrusive or extrusive?
Dacite can be both intrusive and extrusive. Intrusive dacite forms when magma solidifies beneath the Earth's surface, while extrusive dacite forms when lava erupts on the Earth's surface and cools quickly.
How igneous rock classified?
Geologists classify rocks by where they are formed; above ground or under ground
Are fine crystals intrusive or extrusive?
extrusive
Is basalt an intrusive rock or extrusive rock?
Extrusive. Solidifies above ground level.
