Across
- 3. formed from existing rock that was subjected to heat and/or pressure
- 4. rock often found in horizontal layers
- 6. the process by which sediment becomes sedimentary rock
- 7. formed from the freezing of magma or lava
- 9. a separation between two strata caused by a period of erosion or no sediment deposition
- 10. formed from small particles accumulating and then sticking together
- 12. igneous rock formed above the ground
Down
- 1. igneous rock formed in magma in the ground
- 2. a distinct separation between two rock strata
- 5. sediments formed horizontally, deformed into curved shapes
- 8. <45% is SiO2 and very dark
- 11. both heat and pressure involved in this metamorphic rock