Across
- 3. – Porous sandstone known for flexibility
- 5. (rock), also known as Dolostone – Sedimentary carbonate rock that contains a high percentage of the mineral dolomite
- 6. – Sedimentary rock, mostly of indurated clay particles
- 7. – Sandstone with angular grains in a clay-fine matrix
- 8. – Water-soluble mineral deposit formed by evaporation from an aqueous solution
- 10. – Soft, brown, combustible, sedimentary rock
- 11. – Rock composed of angular fragments
- 17. – A sedimentary rock made of a mechanical mixture of sylvite and halite
- 18. – Lime-rich mud or mudstone which contains variable amounts of clays and silt
- 19. – Hard, fine-grained sedimentary rock composed of cryptocrystalline silica
- 21. – Sedimentary rock that is composed mostly of fragments of shells
- 22. – Cryptocrystalline form of the mineral quartz
- 24. shale – Organic-rich fine-grained sedimentary rock containing kerogen
- 27. – Banded mixture of hematite and quartz
- 30. – Form of limestone deposited by mineral springs
- 31. – Sedimentary rock which has a grain size in the silt range
- 32. – Fine grained sedimentary rock whose original constituents were clays or muds
- 34. – Sedimentary rock formed from ooids
- 35. – Hard, coarse-grained, siliceous sandstone
- 37. – Product of rock weathering in wet tropical climate rich in iron and aluminium
Down
- 1. – Sedimentary rock containing large amounts of phosphate minerals – A non-detrital sedimentary rock that contains high amounts of phosphate minerals
- 2. – Sedimentary rock composed of smaller rock fragments
- 4. – Till which has been indurated or lithified by burial
- 7. – Form of opaline silica that is often found around hot springs and geysers
- 9. – Type of sandstone containing at least 25% feldspar
- 12. – Soft, white, porous sedimentary rock made of calcium carbonate
- 13. – Soft, siliceous sedimentary rock that is easily crumbled
- 14. – Type of limestone that is composed predominantly of sand-size grains
- 15. – Type of sedimentary rock
- 16. – Geologic deposit of a turbidity current
- 20. – Clastic sedimentary rock composed primarily of clay-sized particles
- 23. – Mud-supported carbonate rock that contains greater than 10% grains
- 25. – Type of sedimentary rock
- 26. – Fine-grained, clastic sedimentary rock
- 28. – Type of sedimentary rock
- 29. iron formation – Distinctive layered units of iron-rich sedimentary rock that are almost always of Precambrian age
- 33. – Combustible sedimentary rock composed primarily of carbon
- 36. – Porous limestone rock formed when carbonate minerals precipitate out of ambient temperature water
