Marked Decline in Atmospheric Carbon Dioxide Concentrations During the Paleogene

@article{Pagani2005MarkedDI,
  title={Marked Decline in Atmospheric Carbon Dioxide Concentrations During the Paleogene},
  author={M. Pagani and J. Zachos and K. Freeman and B. Tipple and S. Bohaty},
  journal={Science},
  year={2005},
  volume={309},
  pages={600 - 603}
}
The relation between the partial pressure of atmospheric carbon dioxide (pCO2) and Paleogene climate is poorly resolved. We used stable carbon isotopic values of di-unsaturated alkenones extracted from deep sea cores to reconstruct pCO2 fromthe middle Eocene to the late Oligocene (∼45 to 25 million years ago). Our results demonstrate that pCO2 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… Expand

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