Crossword

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Across
  1. 2. Organisms preserved in sedimentary rocks
  2. 4. A tool to measure motion of ground
  3. 6. Fe-rich red colored garnet
  4. 10. Khetri mines are famous for this mineral
  5. 12. The era often known as the Age of reptiles
  6. 14. Weathered rock and organic matter
  7. 16. Used to observe the interference figures
  8. 17. The national gemstone of Australia
  9. 18. Sky appears blue due to which type of scattering
Down
  1. 1. Used extensively in road and building construction
  2. 3. Mineral group including Andalusite and Kyanite
  3. 5. A metamorphic rock that can be used to make chalk boards
  4. 7. A large, fan-shaped pile of sediment usually formed where a stream emerges from a narrow canyon onto a flat plain
  5. 8. Oldest dated mineral on earth
  6. 9. A type of stereo net used for structural geology
  7. 11. Two or more minerals together
  8. 13. A type of igneous rock that is a volcanic glass and forms when lava cools quickly
  9. 15. Geological Age of coal found in north east India