What are the Main Types of Rocks?

sedimentary rock, metamorphic rock, igneous rock 

There are 3 main types of rocks:


igneous 

-

sedimentary 

-

metamorphic 








Igneous rock: near volcanic activity

Metamorphic rock: pulled and heated underground

Sedimentary rock: compressed layers underground

GeoGallery:

Close up photos of rocks

check out this gallery to see all types of rocks

Igneous  rock is a type of rock that forms from melted rock that cools and hardens.



Click here to explore igneous rocks.


gabbro

Metamorphic  rock is a type of rock that forms when heat or pressure change an existing rock


Click here to explore metamorphic rocks.

marble

 Sedimentary  rock is a type of rock that forms when layers of sediment are pressed together.


Click here to explore sedimentary rocks.

chalk

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