Greenland ice core dating

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Some features of this site are not compatible with your browser. Install Opera Mini to better experience this site. An assembly line of science equipment lined the twenty-foot-deep trench that served as a makeshift lab.

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Ice consists of water molecules made of atoms that come in versions with slightly different mass, so-called isotopes.

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Polar ice results from the progressive densification of snow deposited at the surface of the ice sheet. The transformation of snow into ice generally occurs within the first meters and takes from decades to millennia, depending on temperature and accumulation rate, to be completed. During the first stage of densification, recrystallization of the snow grains occurs until the closest dense packing stage is reached at relative densities of about 0. Then plastic deformation becomes the dominant process and the pores progressively become isolated from the surface atmosphere.

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