Across
- 3. French geologic term for the time between 145.5 and 65.5 million years ago
- 4. English term for natural glass formed by volcanic activity
- 7. English term for molten rock below Earth's surface
- 8. French term for a thick subsurface layer of soil that remains frozen throughout the year
- 9. English term for type of rock formed from cooled lava
- 11. French term for erosion caused by wind
- 12. English term for the geological epoch starting approximately 10000 years ago
- 13. English term for mineral used in making glass
Down
- 1. French term for the study of fossils
- 2. French term for a crater formed by volcanic eruption
- 5. English term for layers of Earth's crust, often composed of sediment
- 6. French term for a planar fracture in rock across which there has been significant displacement
- 7. English term for brightly colored mineral often associated with copper
- 10. French term for instrument used to record earthquakes