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Intrusive rocks are under pressure so they are usually harder.

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12y ago

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Why is intrusive rock harder than a extrusive igneous rock?

The rocks are underground so intrusive rocks are under pressure so its harder.


Is basalt an intrusive rock or extrusive rock?

Extrusive. Solidifies above ground level.


Is schist an intrusive or extrusive rock?

Neither, Igneous rock is either intrusive or extrusive. Thats what intrusive and extrusive is... A igneous rock.


Is a metamorphic rock intrusive or extrusive?

It is neither. Intrusive and extrusive are terms used to describe igneous rock.


Is Obsidian an extrusive rock or intrusive rock?

Yes it is extrusive love yall


Are basalt extrusive or intrusive?

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Is a dike a intrusive ingneouse rock or a extrusive rock ingneouse?

A dike is an intrusive igneous rock. It is a vertical intrusion that is usually associated with a central magma chamber. It is intrusive because it usually does not reach the surface. When a dike does reach the surface, the magma it countains erupts and forms an extrusive lava flow.


Is obsidian a intrusive or extrusive igneous rock?

Andesite is considered an extrusive igneous rock.


Is extrusive a rock?

Igneous rocks can be categorized as either extrusive or intrusive.


What are the types of Igneous rock?

extrusive and intrusive


What are the type of igneous rock?

extrusive and 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.