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- Daniel P. Schrag
- Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, USA.
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- John. A. Higgins
- Department of Geosciences, Princeton University, Princeton, NJ 08544, USA.
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- Francis A. Macdonald
- Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, USA.
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- David T. Johnston
- Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, USA.
書誌事項
- 公開日
- 2013-02
- DOI
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- 10.1126/science.1229578
- 公開者
- American Association for the Advancement of Science (AAAS)
この論文をさがす
説明
<jats:title>The Third Way</jats:title> <jats:p> Because organic carbon contains a larger fraction of the light isotope <jats:sup>12</jats:sup> C than inorganic carbonate, variations in the carbon isotopic record of sedimentary rocks are thought to represent changes in the amount of organic carbon buried as sediments (and thus removed from the rest of the carbon cycle). <jats:bold> Schrag <jats:italic>et al.</jats:italic> </jats:bold> (p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" page="540" related-article-type="in-this-issue" vol="339" xlink:href="10.1126/science.1229578">540</jats:related-article> ; see the Perspective by <jats:bold> <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6119" page="533" related-article-type="in-this-issue" vol="339" xlink:href="10.1126/science.1231981">Canfield and Kump</jats:related-article> </jats:bold> ) suggest that historically a third component was important: authigenic carbonate. Authigenic carbonate is not produced in any appreciable quantity today, but was much more abundant when the level of atmospheric oxygen was low. </jats:p>
収録刊行物
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- Science
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Science 339 (6119), 540-543, 2013-02
American Association for the Advancement of Science (AAAS)
