Photo Credits:
Todd Sowers
LDEO, Columbia University, Palisades, New York.
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of a full resolution TIF image
| Paleo Slide Set: Polar Ice Cores |
| Deep drilling at Vostok | |
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Deep drilling at Vostok was begun by the Soviets in 1980. After five years of coring, a stuck drill brought the 3G core, whose shelter is shown here, to a halt. Chemical analysis of air bubbles
trapped in the 160,000 year record contained in this 2202 m core gave scientists their first long look at the past composition of Earth's atmosphere.
Photo Credits: Todd Sowers LDEO, Columbia University, Palisades, New York. |
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