ROCK RIDDLE

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Across
  1. 5. Dark and dense, from lava I flow, on ocean floors, I help land grow. A common rock, both tough and vast, from volcanoes, I cool down fast. What am I?
  2. 8. Before I was an ocean, I was a rift. Before I was a mountain, I was a trench. My birth and death shape the continents. What cycle am I?
  3. 10. I fizz when you drop acid on me. I am found in limestone and marble. What mineral am I ?
  4. 11. I’m where the plate slides, One plate goes under, the other rides. I spark great quakes and magma’s birth, Pulling crust deep into the Earth. What am I?
  5. 12. table I mark the line, the underground top, where saturated zones start and stop. Fluctuating high and sinking low, depending on how much water flows. What am I?
  6. 13. I am formed by the dissolution of limestone, creating underground worlds of stalactites and stalagmites. What type of landscape am I?
  7. 17. Formed from ancient plants buried deep, under pressure and heat, in layers I sleep.A fossil fuel, black and bright, Burn me for energy, I give you light. What am I?
  8. 19. I shine green but don’t last long, In ultramafic rocks, I belong. No cleavage guides my crystal’s fate, Yet in deep Earth, I dominate. What mineral am I?
  9. 20. I was a supercontinent, mighty and vast, all Earth's landmasses together held fast.In the Mesozoic, I started to break, Drifting apart for new continents' sake. What am I?"
  10. 21. I am a pit in the ground deep and wide where minerals dig and machines reside. What am I
  11. 23. Frozen rivers of time, I carve landscapes with relentless patience, leaving valleys in my wake. What am I?
  12. 24. I crystallize deep within the Earth, my large grains reflect my slow birth. When erosion sets me free, I become sand. What rock am I?
  13. 25. I am soft, flaky and used in cosmetics, my crystal structure allows me to split perfectly into thin sheets, making me useful in insulation. What mineral am I?
  14. 27. I move like a river, but instead of water, I am liquid rock beneath the crust. What am I?
  15. 28. I start as plants in a bog so wet, layer by layer, I slowly set.Not yet coal, but dark and light, a future fuel if buried tight. What am I?
Down
  1. 1. I have the largest storm in the solar system, called the Great Red Spot. What planet am I ?
  2. 2. I work in silence, yet my power is great, I reshape the land at a patient rate. I carry the old to places anew, by wind and water, my work is true. What am I?
  3. 3. I am a winding, snake like river formation found in flat landscape. What am I ?
  4. 4. I am a lightweight, porous volcanic rock that can float on water . What am I?
  5. 6. The deepest parts of the ocean, where tectonic plates descend. What are these underwater features?
  6. 7. With adamantine luster, I gleam so bright, the hardest of all, resisting each bite. Formed under pressure in Earth's deep embrace, I cut through others but keep my own face. What am I?
  7. 9. A gemstone red, with fiery gleam, Aluminum oxide in crystal’s dream. Corundum’s heart, so rare and bright, a symbol of passion and radiant light. What am I?
  8. 11. I travel through solids, but liquids I refuse, moving side to side with energy diffuse. Slower than my partner, yet shaking with grace, I reveal Earth's layers in a seismic race. Which seismic wave am I?
  9. 14. I’m the softest mineral, smooth and white, in a powdered form, I keep things light. Low on Mohs, at number one, for making paper, I get the job done. What am I?. What am I?
  10. 15. I formed at subduction zone facies and contain garnet(pyrope) + cpx(omphacite). What rock am I ?
  11. 16. I’m a mineral that tastes like the sea, crystallized cubes, clear as can be. Formed from evaporating lakes and brine, on your dining table, I often shine. What am I?"
  12. 18. I am a volcanic glass, dark in colour, that cools so fast, no cystal can form. What am i?
  13. 20. I reveal the time when compass pointed to different North pole, witten along ocean floor. What record am I?
  14. 22. Unseen, yet measured with instruments, my waves reveal the heartbeats of the planet. What kind of wave am I?
  15. 26. I streak through space with a glowing tail, a ball of ice and dust so pale. From the Oort Cloud or Kuiper Belt, my fiery show can be felt. What am I?