1. This Presentation is About:
Igneous Rocks
Sedimentary Rocks
Metamorphic Rocks

2. Igneous Rock
Igneous rock is formed from molten rock that
hardened into a solid state.

3. Forming Igneous Rocks

4. Types of Igneous Rock
• There are two types of igneous rock:
Extrusive, which forms from lava that hardens on
Earth’s surface.
Intrusive, which forms from magma that hardens
beneath Earth’s surface.

5. Extrusive Rock
Lava Cools Quickly
and Hardens into
Extrusive Rock
Molten Rock Above Surface (Lava)

6. Extrusive rock formation - cooling lava

7. Intrusive Rock
Molten Rock
Below Surface
(Magma)
When the Volcano Stops Erupting, the Magma
Cools Slowly and Hardens into Intrusive Rock

8. Igneous Rock Types
Granite
Coarse grained

9. Sedimentary Rock
Sedimentary rock is made of sediment that has
been deposited, compacted, and cemented.

10. Sedimentary Rock - layers

12. Types of Sedimentary Rock
• There are three types of sedimentary rock:
Clastic, which is formed when rock fragments are
squeezed together.
Organic, which forms when the remains of plants
and animals are deposited in thick layers.
Chemical, which forms when minerals that are
dissolved in a solution crystallize.

13. Sedimentary Rock

15. Metamorphic Rock
Metamorphic rock is any rock that has gone
under immense heat and pressure to
transform into another rock.

16. How Metamorphic Rocks are Formed
HEAT AND PRESSURE
Earth’s Crust
Magma
Rock
Layers

17. Metamorphic Rock Forming

18. Types of Metamorphic Rock
• There are two types of Metamorphic rock:
Foliated, which is when the rock grains are
arranged in parallel layers or bands.
Nonfoliated, which is when the rock grains are
arranged randomly.

19. Foliated Rock

20. Nonfoliated Rock

21. Metamorphic Rock

22. Foliated Metamorphic Rock –Slate

23. Non-Foliated Metamorphic Rock - Marble

24. The Rock Cycle

25. The Rock Cycle