1. Historical Geology Lecture 19 Geologic Events of the Cenozoic Era

2. Historical Geology Outline ICenozoic Timeline IICenozoic Paleogeography IIIGeologic Framework A)Incised Meanders B)Superposed Streams IVCenozoic North America A)Cenozoic Cordilleran Events 1)Phase 1 (70 mya - 40 mya): Laramide Orogeny 2)Phase 2 (40 mya - 20 mya): Resumption of Arc Volcanism 3)Phase 3 (20 mya - present): Complex Tectonism B)Cenozoic Appalachian Events C)Cenozoic Gulf Margin Events VCenozoic Events of Eurasia A)Alpine-Himalaya Belt B)Disappearance of Tethys VICenozoic Climate

3. Historical Geology The Cenozoic Era

4. Historical Geology Cenozoic Paleogeography

5. Historical Geology Geologic Framework Incised Meanders

6. Historical Geology Geologic Framework Superposed Streams

7. Historical Geology The Tertiary Period

8. Historical Geology The Tertiary Period North America Appalachian Margin Rejuvenation Chesapeake Bay Bolide Gulf Coast Margin Subsidence Evaporite Intrusions Cordilleran Margin Phase I: Laramide Orogeny Phase II: Return to Arc Volcanism Phase III: Complex Tectonics

9. Historical Geology The Tertiary Period North American Paleogeography

10. Historical Geology Cenozoic Cordilleran Margin Physiographic Regions

11. Historical Geology Cenozoic Cordilleran Margin Phase I : Latest Cretaceous - Middle Eocene Laramide Orogeny Intermontane Basin Formation

12. Historical Geology Cenozoic Cordilleran Margin Phase I : Latest Cretaceous - Middle Eocene Intermontane Basins Egan and Urquhart, 1993 Bird, 1988 Jones, et al., 1996

13. Historical Geology Cenozoic Cordilleran Margin Phase II : Late Eocene - Middle Miocene Intermontane Basin Deposition Resumption of Arc Volcanism

14. Historical Geology Cenozoic Cordilleran Margin Phase II : Late Eocene - Middle Miocene Intermontane Basin Deposition - Oil Shales and Other Lake Deposits Green River Formation Hell's Hole Canyon, Utah Lake Marls Bryce Canyon Natl Park, Utah

15. Historical Geology Cenozoic Cordilleran Margin Phase II : Late Eocene - Middle Miocene Intermontane Basin Deposition Beartooth Plateau Yellowstone National Park

16. Historical Geology Cenozoic Cordilleran Margin Phase II : Late Eocene - Middle Miocene Resumption of Arc Volcanism Clarno Formation Central Oregon John Day Formation Central Oregon

17. Historical Geology Cenozoic Cordilleran Margin Phase III : Early Miocene - Present Columbia River Plateau Volcanism Basin and Range Extension Rotation of Sierra Nevada Mountains Colorado Plateau Tectonic Shearing

18. Historical Geology Cenozoic Cordilleran Margin Phase III : Early Miocene - Present Tectonic Shearing

19. Historical Geology Cenozoic Cordilleran Margin Phase III : Early Miocene - Present Columbia River Plateau Volcanism Picture Gorge Mitchell, Oregon

20. Historical Geology Cenozoic Cordilleran Margin Phase III : Early Miocene - Present Basin and Range Extension

21. Historical Geology Cenozoic Cordilleran Margin Phase III : Early Miocene - Present Rotation of Sierra Nevadas and Cascades

22. Historical Geology Cenozoic Cordilleran Margin Phase III : Early Miocene - Present Colorado Plateau Uplift San Juan River SE Utah Flaming Gorge NE Utah

23. Historical Geology Cenozoic Cordilleran Margin Phase III : Early Miocene - Present Tectonic Shearing

24. Historical Geology Cenozoic Appalachian Margin Rejuvenation

25. Historical Geology Cenozoic Appalachian Margin Chesapeake Bay Bolide Graphics: Michael Hall, Virginian-Pilot

26. Historical Geology Cenozoic Gulf Coast Margin Best record of Cenozoic Strata Passive Margin Subsidence Salt Domes

27. Historical Geology Cenozoic Gulf Coast Margin Passive Margin Subsidence Salt Domes

28. Historical Geology Cenozoic Events of Eurasia Alpine-Himalaya Orogenic Belt Disappearance of the Tethys Sea

29. Historical Geology Cenozoic Events of Eurasia The Himalayan Orogeny

30. Historical Geology Cenozoic Events of Eurasia The Alpine Orogeny Latest Cretaceous Eocene Late Miocene

31. Historical Geology CenozoicClimate