1 / 20

The Geologic Time Scale

The Geologic Time Scale. Mass extinctions. 99.9% of all living things that have ever existed on earth have gone extinct earth has experienced 5 five extinctions . Geologic time scale. Era Largest unit of geologic time

kim
Download Presentation

The Geologic Time Scale

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. The GeologicTime Scale

  2. Mass extinctions • 99.9% of all living things that have ever existed on earth have gone extinct • earth has experienced 5 five extinctions

  3. Geologic time scale • Era • Largest unit of geologic time • lasts tens to hundreds of millions of years and consists of two or more periods. • Period • Divides Eras • Most commonly used units of time scale • Lasts millions of years • Each is associated with a particular rock system • Epochs • Divide Periods • Smallest unit of geologic time • Lasts several million years

  4. Pre Cambrian

  5. Paleozoic ERa

  6. Cambrian544-505 mya

  7. Ordovician505-440 mya

  8. Silurian440-410 mya

  9. Devonian410-360 mya

  10. Carboniferous360-286 mya

  11. Permian286 – 245 mya

  12. Mesozoic era

  13. Triassic245-208 mya

  14. Jurassic208-146 mya

  15. Cretaceous146-65 mya

  16. Cenozoic era

  17. Tertiary65-1.8 mya

  18. Quarternary1.8 mya- present

More Related