1. Geologic Story of Minnesota (as told by its rocks) Part II: Phanerozoic Rocks

2. Geologic Timescale Today’sLecture

4. Evolution of the Penokean Mountains St. CLOUD JAY COOKE HIBBING

6. 1,000,000,000 Years Ago Minnesota becomes the stable interior of the North American Continent 500,000,000 Years Ago Shallow seas begin to periodically flood Minnesota

8. The Cambrian Explosion of Life

9. Snowball Earth Snowball Earth The Trigger of the Cambrian Explosion??

10. The Carbon Cycle

11. Supercontinent Rodinia ~750 Ma

14. Paleozoic Epicontinental Seas

15. Geography of Middle Laurentia in Paleozoic Time

17. The Jordan Sandstone Unconformity Missing Fossils

19. Advanced Transgression Regression

20. Paleozoic Formations of the Midwest Twin Cities

21. Ordovician Rocks of the Mississippi River Bluffs Mound Park Minnehaha Falls Ford Dam and Lock P-Platteville Limestone G-Glenwood Shale S-St. Peter Sandstone P P P G-- S S S

22. Fossil Hunting in the Twin Cities Lilydale Park (the Brickyard)

23. Paleogeography at the End of the Paleozoic

24. Extinctions at the End of the Paleozoic Snowball Earth?

27. Western Interior Seaway

28. Cretaceous Deposits in Minnesota Lignite and shale in southern Minnesota Conglomerate and sandstone on banded iron formation in north-central Minnesota Deeply weathered gneiss in Southwestern Minnesota

29. The Coleraine Formation

30. High Sediment Production Low Sediment Production Why don’t dinosaur fossils occur in Minnesota?

32. The Break-up of Pangea

34. The Bedrock Geology of Minnesota is Complete