1. Rock Types
By John Doe

2. What is a Rock?

3. A rock is a naturally formed mixture
of mineral matter.

4. Types of Rocks
• Igneous
•Metamorphic
•Sedimentary

5. Rock type is determined by how the rock was formed.
1. Igneous rocks are formed from lava
2. Metamorphic rocks are created by heat and pressure
3. Sedimentary rocks are formed from particles of
sediment

6. Igneous
Born From Fire!

7. Basalt is a type of Igneous rock
The sea floor is made up of basalt.

8. Metamorhic rocks are created by:

10. Sedimentary rocks are formed by the
compaction of sediments

12. The Rock Cycle
The rock cycle is a fundamental concept in geology that describes the dynamic
transitions through geologic time among the three main rock types: sedimentary,
metamorphic, and igneous. As the diagram to the right illustrates, each type of rock is
altered or destroyed when it is forced out of its equilibrium conditions. An igneous rock
such as basalt may break down and dissolve when exposed to the atmosphere, or melt
as it is subducted under a continent. Due to the driving forces of the rock cycle, plate
tectonics and the water cycle, rocks do not remain in equilibrium and are forced to
change as they encounter new environments. The rock cycle is an illustration that
explains how the 3 rock types are related to each other and how processes change from
one type to another over time.
Bad Slide!

13. The Rock Cycle

14. Rock Review
Rock: definition
3 types of rocks:
•Igneous
•Metamorphic
•Sedimentary
The rock cycle

15. The End