Moderate difficulty suitable for most players
Tectonic Enigma: Deep Earth Terminology
Challenging puzzle for experienced crossword solvers
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Across
- 1. Layered texture in metamorphic rocks resembling leaf-like planes
- 2. Mechanical fracturing process in brittle deformation zones
- 3. Particles deposited by water, wind, or ice, precursor to rock
- 5. Columnar jointing seen famously in basalt cliffs, resembling fences
- 6. Massive igneous intrusion exposed over hundreds of square kilometers
- 9. Foreign rock fragment enclosed within an intrusive igneous body
- 13. Equilibrium of Earth's lithosphere on the asthenosphere’s buoyancy
Down
- 4. Alkaline volcanic rock often linked to oceanic rift environments
- 7. Fossilized single-celled organisms forming large carbonate lenses
- 8. High-pressure metamorphic rock from subducted oceanic crust
- 10. Fragments of ancient oceanic crust thrust onto continents
- 11. Proterozoic supercontinent predating Pangea by over a billion years
- 12. Large, saucer-shaped igneous intrusion typically of layered mafic rock
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