Oldest rocks ever!

Baffin Island's "old" rocks

Some rocks were found on Baffin Island in the Canadian Arctic that give clues to the composition of the Earth shortly after it was formed. The rocks  are only 69 million years old. However, their isotopic composition suggests that they were formed from the material of the Earth’s primitive mantle. As such, they provide extra evidence for the composition of that mantle and refute some hypotheses about it.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: