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Part 1: Paleohistory of the American West

Petroglyphs, Mastodon Mystery and Climate Change - Three Discussions about the prehistoric American West & what lessons can be applied to the present day. Part 1: Paleohistory of the American West. North America Satellite view. Keeling Curve. PaleoClimate Change. Tardis, from Dr. Who.

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Part 1: Paleohistory of the American West

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  1. Petroglyphs, Mastodon Mystery and Climate Change- Three Discussions about the prehistoric American West & what lessons can be applied to the present day Part 1: Paleohistory of the American West

  2. North AmericaSatellite view

  3. Keeling Curve

  4. PaleoClimate Change

  5. Tardis, from Dr. Who

  6. Pictograph

  7. PictographBarrier Canyon Style

  8. PictographBarrier Canyon Style

  9. PictographBarrier Canyon Style

  10. Cliff Dwellings at Mesa Verde

  11. Some Ancient Indian Cultures

  12. Petroglyphs – Atlatl Rock NV

  13. Atlatl www.uwlax.edu

  14. Modern Petroglyph

  15. Chichen Itza

  16. Maize & Kokopeli

  17. Great Basin Curvilinear ca 2-3 kya

  18. Great Basin CurvilinearFallon, NV

  19. PetroglyphFallon, NV

  20. Pit & Groove ca 5 kya

  21. Dry Lake in Death Valley

  22. Nevada >5000 years ago

  23. Crater Lake

  24. Ash Layer near Missoula MT

  25. Lake Missoula Floods

  26. North America ca. 11 kya

  27. Geological Eras • Holocene 10,000 years ago to present  • Pleistocene .01 – 2 Million years ago • Pliocene 2 – 13 Million years ago • Miocene 13 – 25 million years ago • Oligocene 25 - 58 million years ago • Eocene 58 – 36 million years ago • Paleocene 65 – 58 million years ago

  28. Holocene (10,000 bp) Chronology Lake Missoula Floods & Megafaunal Extinction Bow & Arrow Columbus Great Basin Curvilinear Clovis People Kennewick Man Anasazi Disappear Mt Mazama Explodes Pit & Groove Maize Early Archaic Alti- thermal Medi- thermal Terminal Archaic Pueblo Climate Compared to 10 ky average John Kantner http://sipapu.ucsb.edu/timeline/index.html N. C. Heywood (nheywood@uwsp.edu)

  29. Conclusions • Global Temperatures were constant during the Holocene • There were major changes in precipitation patterns (drought) in the West • Some Cultures probably disappeared because of drought • Major Catastrophes also occurred that probably killed humans

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