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Is obsidian intrusive or extrusive rock?
Obsidian is intrusive because it was cooled below the ground.
Is lava intrusive or extrusive?
Lava is extrusive, meaning it forms on the Earth's surface as a result of volcanic activity. It cools rapidly and solidifies quickly into volcanic rock, such as basalt or obsidian. Intrusive rock, on the other hand, forms below the Earth's surface from magma that cools slowly.
Is obsidian an instrusive or extrusive igneous rock how do you know?
Obsidian is an extrusive rock and is formed from rapidly cooling magma. Obsidian is also known as volcanic glass and one can find only sub-microscopic crystals in it. This is because it was cooled too fastly for large crystals to form. If the material that obsidian consists of were an intrusive rock and had a lot of time to cool down, one would find that it would be composed of easily visible crystals.
What are two types igneous rocks?
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.
Is hematite extrusive or intrusive?
Hematite is commonly found as a sedimentary mineral in deposits like banded iron formations. It is not typically associated with igneous rocks, so it is neither extrusive nor intrusive in the conventional sense.
Is Obsidian an extrusive rock or intrusive rock?
Yes it is extrusive love yall
Is obsidian a intrusive or extrusive rock?
it is A instrsive! lol
Is obsidian intrusive or extrusive rock?
Obsidian is intrusive because it was cooled below the ground.
Is obsidian a intrusive or extrusive igneous rock?
Andesite is considered an extrusive igneous rock.
What trait is an intrusive igneous rock?
If a rock is intrusive, that means that it formed from magma inside the Earth. An example is granite. The opposite is extrusive, which forms from cooling lava from volcanoes. An extrusive rock is obsidian.
Can magmas be classified as intrusive or extrusive?
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.
Are crystals intrusive or extrusive?
extrusive
Is obsidian extrusive rock?
No. Obsidian is volcanic glass. Glass is amorphous and thus noncrystalline.
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.
what is the difference of igneous rocks?
What do you mean? Do you mean intrusive or extrusive or the types of rocks themselves? Fine. Here's a list Basalt Granite Pumice Obsidian
