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Determining Rocks
| Term | Definition |
|---|---|
| Extrusion (lava layers) | Always younger than layers below them |
| Intrusion | Always younger than the layers they CUT through |
| Superposition | Relative ages of rock (no numbers) |
| Fault (EQ) | Break in rock *Always younger than the rock it breaks* |
| Horizontal Rocks | The layers in the rock are horizontal until a force pushes them some other way |
| UNIFORMitarianism | The same thing just like uniforms |