Deep or Hot Environments
Deep or Hot Environments
- Crystallization of molten rock (magma) Igneous rocks
- Big crystals cooled over a long time
- Little crystals cooled faster
- Glass Cooled very fast
- Big crystals in matrix of little crystals -- Cooled slowly then fast Porphyry
- Granite light colored, big crystals
- Basalt dark colored, glass or small crystals
- General Rule: Rocks formed at surface composed of pieces (clasts) of other rock