Scientists endured bitter winds to retrieve ancient ice from a blue ice field in the Allan Hills of Antarctica. An ice core is a cylinder shaped sample of ice drilled from a glacier. This site will continue to operate in parallel during and after the transition, and will be retired at a future date. Glaciers form as layers of snow accumulate on top of each other. Research article 22 Nov
From this was recovered the deepest ice core record to date. I was wondering how ice cores are dated accurately. When archaeologists want to learn about the history of an ancient civilization, they dig deeply into the soil, searching for tools and artifacts to complete the story. This page has been archived and is no longer updated. Thin cores of ice, thousands of meters deep, have been drilled in the ice sheets of Greenland and Antarctica.
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