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Paleo Slide Set: Polar Ice Cores
Extruding a core
Scientists extrude the core from its barrel with the utmost care. Any butyl acetate on the core surface is carefully cleaned off before sawing the ice into 2 m sections. The cloudy layers clearly visible in this 6 m core section were formed when dust fell onto the ice sheet and was entrained in the ice.

Photo Credits:
Mark Twickler
University of New Hampshire
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Last Modified: 12 October 2001

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