Across
- 4. hard calcium carbonate
- 5. soft stratified rock made from clay that splits easily
- 6. a solid coming out of solution
- 7. dip in the Earth's surface
- 8. remains of extinct plants and animals
- 11. deposit of fine sandor clay
- 13. layer of a mineral or metal in soil or rocks
- 14. chalcedony nodules
- 15. pebbles held together by calcite
- 16. gravel and boulders cemented together
- 17. silica crystals
Down
- 1. stacked layers of sedimentary rock
- 2. calcium sulfate used in drywall
- 3. press something into a smaller space
- 5. sand or quartz cemented together
- 7. sequence of layers
- 9. loose granules
- 10. firmly pressed together
- 11. matter that settles to the bottom of a liquid
- 12. sheet of material covering a surface
- 14. particles bound together in a rock