Zusammenfassung der Ressource
Rock Type
Characteristics
- Sedimentary Rocks
- Often contain fossils
- Are formed in layers
- Are classified by texture and composition
- Great variation in particle
size
- Igneous Rocks
- Formed from cooled magma and lava
- Intrustive Rocks form under the surface
- Extrusive rocks form on the surface
- Highly resistant
- Do not contain fossils
- Metamorphic Rocks
- Are formed from other
rocks
- Are formed under great heat and
pressure
- Have fossils but they are usually
deformed
- Have crystals that are
arranged in layers