1 / 12

Snowball Earth

Snowball Earth. Snow Ball Earth between 750 and 600 million years ago. 2 Billion years ago O2 began forming in the atmosphere. CO2 has been a driver of Climate for Millions of years. (phanerozoic 550 Mya to present) There have been large ice sheets during the Phanerozoic ~300 Mya

tress
Download Presentation

Snowball 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. Snowball Earth

  2. Snow Ball Earth between 750 and 600 million years ago.

  3. 2 Billion years ago O2 began forming in the atmosphere

  4. CO2 has been a driver of Climate for Millions of years. (phanerozoic 550 Mya to present) There have been large ice sheets during the Phanerozoic ~300 Mya Our present Ice age began around 2 MYa http://www.atmosedu.com/Geol390/articles/RoyeretalCO2GSAToday%2704PhanerozoicClimate.pdf

  5. Most of the past 200 Myr has been very warm and dominate by a greenhouse Earth. Our present state (the Pliestocene began about 2 Myr ago)

  6. K-T boundary ~ 65 Million years ago. End of Dinosaurs. Evidence suggests Asteroid impact cause global cooling for several years

  7. Shock patterns in quartz

  8. Chicxulub (Chik-shoo-loob) impact crater Near Cancun, Mx. “tail of the devil”??

More Related