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Climate Change over Millions of Years

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Presentation on theme: "Climate Change over Millions of Years"— Presentation transcript:

1 Climate Change over Millions of Years
An EET Chapter

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6 How do scientists get cores from the Ocean Floor?
Click here for a website by Columbia University

7 How has the climate of Antarctica changed?

8 Ocean Cores from Cruises

9 Foraminifera Warm water life forms found near Antarctica

10 Choosing a core to examine
million years old Away from plate boundaries, earthquakes

11 Data from Core

12 Warm water foraminifera near Greenland

13 No ice caps 57 Million Years ago, there were no ice caps!

14 Was this warming event global?
Warm water foraminifera found near Southern Africa, Antarctica, Greenland, Washington state etc (cold waters today) This was a global warming event, not a local occurrence

15 Summary Climate change has been occurring for millions of years
A global warming event similar to what scientists are discussing today occurred 57 millions years ago This global warming event wiped out 30-50% of certain plankton, but others thrived Life on land was not negatively affected


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