Dells of the Eau Claire

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Across
  1. 2. 2500 to 1850 million years ago
  2. 3. skied on xenolith composed of quartzite
  3. 7. cooked sandstone
  4. 12. fluvial structure caused by sediment grinding under eddy
  5. 14. crushed rock by lateral movement
  6. 15. locally called rotten granite
  7. 16. volcanic plug
  8. 18. solid rock exposed at the surface
  9. 19. crack in crust formed by divergent plates
  10. 20. orogeny that closed the mid-continent rift
  11. 21. steep face of eroded sedimentary rock
Down
  1. 1. mountain range once in northern Wisconsin
  2. 4. provinces based on topography
  3. 5. country rock carried up by volcanic activity
  4. 6. small cracks showing no movement
  5. 8. great lake formed by mid-continent rift
  6. 9. "you've seen [one], you've seen them all"
  7. 10. oldest sedimentary rock in Wisconsin
  8. 11. walled gorges generally with rapids
  9. 13. isolated 'mounds' of Cambrian sandstone
  10. 17. mountain building process
  11. 18. large grantitic intrusion
  12. 19. ridges and valleys made by moving water