Dells of the Eau Claire



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