Earth's productivity Ghosts of biospheres past

Joe Berry ()
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Joe Berry: Carnegie Institution of Washington

Nature, 1999, vol. 400, issue 6744, 509-510

Abstract: Analyses of lake sediments and tree rings are just two of the ways to obtain proxy records of what the Earth was like in previous eras. But these records are essentially local in coverage, and they need to be extended to regional or global scales. New research indicates that such information may come from analysing the abundance of stable isotopes of oxygen from air trapped in ice cores.

Date: 1999
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DOI: 10.1038/22886

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