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HOME - TOPICS - ROCK CYCLE - LAYERS OF THE EARTH - THE EARTH'S CRUST - IMPACT - BIBLIOGRAPHY
Rock Cycle -
Types of Rocks - Igneous - Metamorphic - Metamorphism - Sedimentary
Rock Cycle
Did you know?
Rock Cycle -
Types of Rocks - Igneous - Metamorphic - Metamorphism - Sedimentary
Rock Cycle
Did you know?
- The volume of Igneous and metamorphic rocks make up 90–95% of the top 16 km of the Earth's crust.
- Igneous rocks can be formed above and below the surface.
- It takes millions of years for rocks to change.
- Many sedimentary rocks are called strata.
- Sedimentary rocks can be found at the bottom of ocean and lakes.
- There are over 700 types of igneous rocks, which most are formed under the Earth's surface.
- Metamorphism means change in form. Thus remember Morph means change.
- Sedimentary rocks are important sources of natural resources such as coals, fossil fuels and even drinking water.
- Igneous and metamorphic rocks can both be transformed into sedimentary rocks.