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This beautiful map traces North America’s geological history

This beautiful map traces North America’s geological history

How old is North America? This gorgeous map from the U.S. Geological Survey shows that the age of the continent’s terrain varies a lot – from the white and yellow areas, which were formed in the last 65 million years, to pink areas that have had their present shape for about 4 billion years. The green areas were formed between 65 million and 248 million years ago, and the blue and purple areas between 248 and 540 million years ago.

The map includes some interesting features. In northern Quebec, for example, the Manicouagan Crater shows up as a green circle amid red and orange.

Ana Swanson | January 15, 2015 at 2:11 pm
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