Washington State Geology

1. Washington State Geology How our state was formed

2. Washington State Geology

3. Washington State Geology

4. Washington State Geology

5. Washington State Geology

6. Washington State Geology

7. Washington State Geology

8. Washington State Geology

10. Washington State Geology

11. Washington State Geology North American Plate 1 Billion Years Ago Panthalassa Ocean

12. Washington State Geology

13. Washington State Geology

14. Washington State Geology

15. Washington State Geology

16. Washington State Geology Kootenay Arc 800-200 MYA North American Plate 1 Billion Years Ago Panthalassa Ocean

17. Washington State Geology

18. Washington State Geology

19. Washington State Geology Kootenay Arc 800-200 MYA Okanogan Subcontinent ~ 185 MYA North American Plate 1 Billion Years Ago Panthalassa Ocean

20. Washington State Geology

21. Washington State Geology Kootenay Arc 800-200 MYA Insular Terrance 90-100 MYA North Cascades Terrances 90-100 MYA Okanogan Subcontinent North American Plate 1 Billion Years Ago Panthalassa Ocean Blue Mountains (Insular Terrance) 90-100 MYA

22. Washington State Geology

23. Washington State Geology

24. Washington State Geology Kootenay Arc 800-200 MYA Insular Terrance Okanogan Subcontinent North Cascades Terrances North American Plate 1 Billion Years Ago Olympic Mountains and lands to the south (25 MYA) Panthalassa Ocean Blue Mountains (Insular Terrance)

25. Washington State Geology Kootenay Arc 800-200 MYA Insular Terrance Okanogan Subcontinent North Cascades Terrances North American Plate 1 Billion Years Ago Panthalassa Ocean Columbia River Basalt 7-17 MYA

26. Washington State Geology Kootenay Arc 800-200 MYA Insular Terrance Okanogan Subcontinent North Cascades Terrances North American Plate 1 Billion Years Ago Panthalassa Ocean Columbia River Basalt 7-17 MYA

27. Washington State Geology Kootenay Arc 800-200 MYA Insular Terrance Okanogan Subcontinent North Cascades Terrances North American Plate 1 Billion Years Ago Panthalassa Ocean Columbia River Basalt 7-17 MYA

28. Washington State Geology Kootenay Arc 800-200 MYA Insular Terrance Okanogan Subcontinent North Cascades Terrances North American Plate 1 Billion Years Ago Panthalassa Ocean Columbia River Basalt 7-17 MYA

29. Washington State Geology

30. Washington State Geology

31. Washington State Geology Ice Sheet 1.6 MYA to 12,000 YA Okanogan Subcontinent Kootenay Arc North American Plate Okanogan Lobe Olympic Peninsula Puget Lobe Columbia Plateau Cascade Volcanoes Mt. Rainier Mt. St. Helen Willapa Hills

32. Washington State Geology

33. Washington State Geology

34. Washington State Geology

35. Washington State Geology

36. Washington State Geology Kootenay Arc 800-200 MYA Okanogan Subcontinent Mt. Baker Glacier Peak North Cascades Terrances North American Plate 1 Billion Years Ago 2 MYA -- May 18, 1980 Panthalassa Ocean Mt. Rainier Mt. St Helen Mt. Adams Mt. Hood Columbia River Basalt 7-17 MYA

37. Washington State Geology

38. Washington State Geology FILM: THE GREAT FLOODS Okanogan Subcontinent Kootenay Arc North American Plate Okanogan Lobe Olympic Peninsula Puget Lobe Columbia Plateau Cascade Volcanoes Mt. Rainier Mt. St. Helen Willapa Hills