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Stack #4622154
| Question | Answer |
|---|---|
| fossils preserved | remains of living things typically found in sedimentary rock |
| types of fossils | -molds -hollows areas that are the shape of an organism -casts -copies of the shape of an organism |
| petrified | turned into stone |
| relative age | the age of rocks compared to the ages of other rocks |
| law of superposition | oldest layer of sediment is at the bottom; the youngest layer is at the top |
| extrusions | layer of igneous rock that forms on Earth's surface |
| intrusions | layer if igneous rock that forms within Earth's surface |
| faults | crackes in the Earth's crust ALWAYS younger then the rocks they cut through |
| unconformities | A gas in the geologic record because rock layers have been lost do to erosion |