1 / 23

History of the Earth

History of the Earth. A brief overview. Charles Lyell: Father of Modern Geology. A The Present is the Key to the Past @ Lyell. Huttonian uniformatarianism. What does this mean?. Precambrian. Precambrian Events. 4.6 billion years ago until 570 million years ago. The Canadian Shield formed.

rudyard-dale
Download Presentation

History of the Earth

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. History of the Earth A brief overview Charles Lyell: Father of Modern Geology

  2. AThe Present is the Key to the Past@Lyell Huttonian uniformatarianism What does this mean?

  3. Precambrian

  4. Precambrian Events 4.6 billion years ago until 570 million years ago • The Canadian Shield formed. • Early life such as bacteria and simple multicelled organisms evolve. • Atmosphere becomes less hostile.

  5. Paleozoic 570 mya to 250 mya • Europe and N. America collide creating the Appalachian Mtn chain along the East Coast of Canada. • The Great Lakes St. Lawrence Lowlands are uplifted from the ocean bottom. • Age of Fish. • Amphibians, reptiles and insects evolve on land. • The supercontinent of Pangaea forms

  6. Life in the Paleozoic

  7. Mesozoic Era 250 mya until 70 mya • A subcontinent collides with the west coast of N. America creating the Western Cordillera mtn chain. • The vast inland sea of N. America eventually drains leaving the vast flat plains. • Dinosaurs evolve and dominate the land. • Flying reptiles evolve. • Small mammals evolve. • Pangaea breaks up into Gondwanaland and Laurasia.

  8. Life of the Mesozoic

  9. Cenozoic Era • Several glaciations cover the Northern Hemisphere and resculpt the land. • The Great Lakes are scoured out by the glaciers. • Mammals grow in size and variety. • Humans evolve near the end of the era.

  10. Life of the Cenozoic

  11. What determines the end of an era? • A mass extinction event

  12. http://people.hofstra.edu/faculty/J_B_Bennington/2clab/timescale.gifhttp://people.hofstra.edu/faculty/J_B_Bennington/2clab/timescale.gif References

More Related