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because of the rocks structure and weight. this makes it.

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Q: Why are igneous rocks impermeable?
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What rocks are impermable?

As a general rule, igneous rocks are impermeable. Metamorphic rocks may also be impermeable, but this will depend on the mineralogy and level of metamorphism. These rocks are impermeable because they have crystals which interlock, forming a watertight structure. This is the rule, but there are exceptions. Sedimentary rocks tend to be permeable or porous, and many will even dissolve, or their cement will dissolve in water. This is because of their often clastic structure which has some holes in it.


What are the economic benefits of igneous rocks?

economic benefits of using igneous rocks are...... igneous rock produces rocks like granite which is impermeable and is strong so good for resovoirs and kitchen work tops which would benefit the area of the place were they mine the granite. there are other rocks but that is proberly the main rock which helps the economic benefits.


When molten rocks cools what rocks form?

igneous rocks


Are the grand canyon rocks permeable or impermeable?

impermeable


What are igneous rocks that form over the surface?

Rhyolititcen rocks.


Are igneous rocks made up of igneous rocks?

Sedimentary rock can be made up partially of igneous clasts, but igneous rock is igneous rock.


What do you call rocks that have been formed from the hot molten material within the earth's crust that has cooled and hardened?

Igneous rocks are formed by the solidification of molten materials.


Where are the two types of igneous rocks made?

Extrusive igneous rocks , Intrusive igneous rocks


Why are igneous are called primary rocks?

Igneous rocks


Are volcanic rocks igneous rocks?

Yes. Volcanic rocks are extrusive igneous rocks.


Are sedimentary rocks are harder than igneous rocks?

No, igneous rocks are harder than sedimentary rocks on average.


What are the five types of igneous rocks in Pakistan?

Where are igneous rocks found in Pakistan? Where are igneous rocks found in Pakistan?