Zusammenfassung der Ressource
Igneous Rocks
- Rocks formed from cooling magma
- Rocks formed by magma reaching the surface called EXTRUSIVE
- Small crystals ~ rapid cooling
- Rocks formed from cooling magma underground are called INTRUSIVE
- Large Crystals - Slow cooling magma
- CHARACTERISTICS:
- hard
- Strong
- Interlocking Crystals
- Dark colored rocks have high mineral content
- Crystals are solids that have a variety of shapes