Igneous Rocks

• Igneous means Fire in Latin

• Many are produced by Volcanos

• Some are produced when underground magma cools and hardens

Igneous Rocks being formed

Basalt

Granite

Sedimentary Rocks

• When little pieces of rock and other sediments are broken down by erosion or wind, they are carried down creeks and rivers and settle.

• They are then cemented and compacted over time. Can take thousands to millions of years

Sedimentary Rocks taken shape

Sandstone

Limestone

Coal

Shale

Metamorphic Rock

• Metamorphic rocks were once igneous and sedimentary rocks.

• So, how did they turn into metamorphic rocks?

• Tons and tons of pressure, which causes heat build up and change occurs.

Metamorphic Rocks

Slate

Marble

The Rock Cycle

Sedimentary Rocks

Sedimentary rocks are the most abundant rock type on Earth

99% of all rocks in Kentucky

• Coal is a very common sedimentary rock formed from plant material (peat and ferns).

• the sedimentary rock limestone will become the metamorphic rock marble

• the sedimentary rock shale will become the metamorphic rock slate

• the igneous rock granite will become the metamorphic rock gneiss (pronounced nice).

Igenous Rocks

• Used for

• Statues

• Construction

• Cleaning supplies

Sedimentary Rock

• Was used to build the Whitehouse

• Used in cement

Metamorphic Rock

• Used for:

• Buildings

• Floors

• Chalkboards

Stalactites

Stalagmites