1 / 31

Geologic Time Scale

Geologic Time Scale. Mr. Skirbst Earth Science Topic 25. Geologic Time Scale. Geologic Time Scale. Describing and dividing major events of Earth’s history. Geologic Time Scale. Era - longest division of geologic time. Geologic Time Scale. Era - longest division of geologic time

peta
Download Presentation

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. Geologic Time Scale Mr. Skirbst Earth Science Topic 25

  2. Geologic Time Scale

  3. Geologic Time Scale Describing and dividing major events of Earth’s history

  4. Geologic Time Scale Era - longest division of geologic time

  5. Geologic Time Scale Era - longest division of geologic time 4 Major Eras

  6. Geologic Time Scale Era - longest division of geologic time 4 Major Eras Period – sub-divisions of eras

  7. Geologic Time Scale • Precambrian - early Earth

  8. Geologic Time Scale • Precambrian • Paleozoic “old life”

  9. Geologic Time Scale • Precambrian • Paleozoic • Mesozoic “middle life”

  10. Geologic Time Scale • Precambrian • Paleozoic • Mesozoic • Cenozoic “current life”

  11. Precambrian Era 4.6 bya – 570 mya

  12. Precambrian Era 4.6 bya – 570 mya Earth formed

  13. Precambrian Era 4.6 bya – 570 mya Earth formed Seas and mountains formed

  14. Precambrian Era 4.6 bya – 570 mya Earth formed Seas and mountains formed Simple life-forms in sea

  15. Precambrian Era 4.6 bya – 570 mya Earth formed Seas and mountains formed Simple life-forms in sea Oxygen builds up in air

  16. Paleozoic Era 570 mya – 225 mya

  17. Paleozoic Era 570 mya – 225 mya Divided into 6 periods based on major events

  18. Paleozoic Era Cambrian – sea-dwelling inverts.

  19. Paleozoic Era Cambrian – sea-dwelling inverts. Ordovician – first fish appear

  20. Paleozoic Era Cambrian – sea-dwelling inverts. Ordovician – first fish appear Silurian – first land plants

  21. Paleozoic Era Cambrian – sea-dwelling inverts. Ordovician – first fish appear Silurian – first land plants Devonian – first amphib. + forests

  22. Paleozoic Era Cambrian – sea-dwelling inverts. Ordovician – first fish appear Silurian – first land plants Devonian – first amphib. + forests Carboniferous – swamps, ferns, insects, reptiles

  23. Paleozoic Era Cambrian – sea-dwelling inverts. Ordovician – first fish appear Silurian – first land plants Devonian – first amphib. + forests Carboniferous – swamps, ferns etc Permian – conifers, lots of reptiles

  24. Paleozoic Era Memory aid: “COSDCP” DC

  25. Paleozoic Era Memory aid: “COSDCP” “Come Over,” Said DCPig DC

  26. Mesozoic Era 225 mya – 65 mya

  27. Mesozoic Era 225 mya – 65 mya Triassic – 1st dinosaurs + mammals

  28. Mesozoic Era 225 mya – 65 mya Triassic – 1st dinosaurs + mammals Jurassic – 1st birds + big dinos

  29. Mesozoic Era 225 mya – 65 mya Triassic – 1st dinosaurs + mammals Jurassic – 1st birds + big dinos Cretaceous – 1st flowers + dinos die out

  30. Cenozoic Era 65 mya – Present Tertiary – mammals, present-day features

  31. Cenozoic Era 65 mya – Present Tertiary – mammals, present-day features Quaternary – humans, ice ages

More Related