Across
- 4. in undisturbed sedimentary rock layers, older layers of rock lie beneath younger rock layers.
- 6. the science of the study of earth
- 8. an igneous rock that forms when magma cools and hardens after cutting through existing rock layer
- 9. described the age of a rock or fossil in comparison to another rock or fossil
- 10. any feature that cuts across a sequence of rocks is younger then everything it cuts
Down
- 1. a gap in the rock record
- 2. any rock fragments that's included inside of another rock is older than the rick in which it is included
- 3. the technique scientists use to determine the absolute age of a material
- 5. forms of life which existed during limited periods of geologic time
- 7. the actual or exact age of a rock or fossil or how long ago it formed