https://geology.com/rocks/igneous-rocks.shtml

Intrusive igneous rocks crystallize below Earth's surface, and the slow cooling that occurs there allows large crystals to form. Examples of intrusive igneous rocks ...

http://mineralogy4kids.org/rock-cycle/intrusive-igneous-rocks

Intrusive, or plutonic, igneous rocks form when magma cools slowly below the Earth's surface. Most intrusive rocks have large, well-formed crystals. Examples ...

https://www.rocksforkids.com/igneous-rock/

Mar 24, 2018 ... In that notion, igneous rocks occur when molten rock turns into solid either below the earth's crust to create intrusive igneous rocks or on the ...

http://www.geologyin.com/2018/03/types-of-intrusive-igneous-rock.html

Mar 15, 2018 ... In most cases, a body of hot magma is less dense than the rock surrounding it, so it has a tendency to creep upward toward the surface. It does ...

https://en.wikipedia.org/wiki/Igneous_rock

Igneous rock or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is ...

https://en.wikipedia.org/wiki/Intrusive_rock

Intrusions are one of the two ways igneous rock can form; the other ... formation of intrusive igneous rock; rock formed from magma ...

http://volcano.oregonstate.edu/book/export/html/1055

These are called intrusive igneous rocks because the magma has intruded into pre-exiting rock layers. Types of intrusive igneous rocks are granite and basalt .

https://sciencing.com/list-extrusive-igneous-rocks-8534625.html

Oct 12, 2018 ... Examples of extrusive igneous rocks include basalt, andesite, rhyolite, ... Intrusive igneous rocks form when magma cools inside the Earth.

http://scienceviews.com/geology/igneous.html

... Rock Property Tests | | Types of Igneous Rocks | ... Intrusive vs. Extrusive. Igneous rocks can be classified into two main categories: intrusive and extrusive.

https://www.volcanodiscovery.com/geology/igneous-rocks.html

Igneous rocks are the most basic type of rocks. They are formed when magma ( molten rock, typically derived from the earth's mantle) solidifies. This can happen  ...