Marked Decline in Atmospheric Carbon Dioxide Concentrations During the Paleogene-Reference-Cited by-同舟云学术

Marked Decline in Atmospheric Carbon Dioxide Concentrations During the Paleogene

Published:2005-07-22 Issue:5734 Volume:309 Page:600-603
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Pagani Mark¹²³,Zachos James C.¹²³,Freeman Katherine H.¹²³,Tipple Brett¹²³,Bohaty Stephen¹²³

Affiliation:

1. Department of Geology and Geophysics, Yale University, 210 Whitney Avenue, New Haven, CT 06511, USA.

2. Earth Sciences Department, University of California, 1156 High Street, Santa Cruz, CA 95064, USA.

3. Department of Geosciences, Pennsylvania State University, University Park, PA 16802, USA.

Abstract

The relation between the partial pressure of atmospheric carbon dioxide ( p CO 2 ) and Paleogene climate is poorly resolved. We used stable carbon isotopic values of di-unsaturated alkenones extracted from deep sea cores to reconstruct p CO 2 fromthe middle Eocene to the late Oligocene (∼45 to 25 million years ago). Our results demonstrate that p CO 2 ranged between 1000 to 1500 parts per million by volume in the middle to late Eocene, then decreased in several steps during the Oligocene, and reached modern levels by the latest Oligocene. The fall in p CO 2 likely allowed for a critical expansion of ice sheets on Antarctica and promoted conditions that forced the onset of terrestrial C 4 photosynthesis.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference63 articles.

1. Evolution of Early Cenozoic marine temperatures

2. Tertiary oxygen isotope synthesis, sea level history, and continental margin erosion

3. L. D. Stott, J. P. Kennett, N. J. Shackleton, Proc. Ocean Drilling Program Sci. Results113, 849 (1990).

4. N. J. Shackleton, J. P. Kennett, Init. Rep. Deep Sea Drill. Proj.29, 743 (1975).

5. Trends, Rhythms, and Aberrations in Global Climate 65 Ma to Present

Cited by 731 articles. 订阅此论文施引文献订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献

1. The Middle-Upper Eocene in the Northern Plateau of the Bahariya Depression, Western Desert (Egypt) and correlation with other Tethyan sectors;Marine and Petroleum Geology;2024-03

2. Calcareous nannoplankton response to middle-late Eocene climate and sea-level changes in the SW Neo-Tethys;Marine Micropaleontology;2024-03

3. Cold climatic snaps during the Eocene-Oligocene transition in the central Tibetan Plateau: Implications for ice-induced sedimentary structures and isotope geochemistry;Palaeogeography, Palaeoclimatology, Palaeoecology;2024-03

4. Eocene dry eolian system in the Jianchuan Basin, southeastern Tibetan Plateau: Implications for regional wind regime and paleoclimate;Palaeogeography, Palaeoclimatology, Palaeoecology;2024-02

5. Toward a Cenozoic history of atmospheric CO ₂;Science;2023-12-08