Explore rare and fascinating geological formations that reveal Earth's most mysterious and unique natural wonders.
Enigmatic Earth's Hidden Marvels
Explore the rare and fascinating geological formations that shape our planet's hidden wonders in this challenging crossword.
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Across
- 1. Dark green variety of chalcedony with red specks resembling blood
- 3. Geological period linked with Australian rock formations
- 5. Rare mineral-rich geological formation often containing rare earth elements
- 7. Landscape formed from dissolution of soluble rocks like limestone
- 11. Castle-like rock formations made from volcanic ash deposits
- 14. Sandstone formation important to geological studies in Africa
- 16. Flat expanse of ground covered with salt and other minerals
- 17. Hot spring that periodically erupts with steam and water
Down
- 2. Tall, thin spire of rock formed by erosion
- 4. Precious gemstone often found in rare sedimentary deposits
- 6. Group of islands formed by volcanic or tectonic activity
- 8. Rock shaped by wind-driven sand erosion in deserts
- 9. Mineral used for radiometric dating of ancient rocks
- 10. Lens-shaped folded rock formation
- 12. Hard, fine-grained sedimentary rock composed of quartz
- 13. Rare oil shale fossil-rich geological deposit found in Tasmania
- 15. Openings near volcanoes emitting steam and gases
- 18. Rare geological clay deposit named after an English town
- 19. Vertical rock formation often found in desert landscapes
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