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The atlas · Climate history · Ice and heat

Outline · being written

Snowball Earth

The times ice may have reached the equator, and the evidence for and against.

The working diagram The globe freezing towards the tropics, with the glacial rocks found at each latitude.
Page type
A lesson, led by a working diagram
Collection
Climate history, ice and heat
When
About 720 million years ago to 635 million years ago, in the Proterozoic. The finished piece will give dates from its sources.
Status
Planned and outlined. Every fact in it will be checked against a named source and listed on Sources before it goes up.

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