measuring years through the Antarctica icesheets

From: <>
Date: Fri Nov 25 2005 - 20:10:45 EST

>How do scientists measure years through the Antarctica icesheets?

THere are yearly ice layers.  The melting in the summer creates a denser ice on the surface and thus one can count each year's accumulation, like leaves on a book.  I have seen photos of those layers but can't find one on the net.

Received on Fri Nov 25 20:11:46 2005

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