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Cenozoic Deep-Sea Temperatures and Global Ice Volumes from Mg/Ca in Benthic Foraminiferal Calcite
Abstract
A deep-sea temperature record for the past 50 million years has been produced from the magnesium/calcium ratio (Mg/Ca) in benthic foraminiferal calcite. The record is strikingly similar in form to the corresponding benthic oxygen isotope (δ 18 O) record and defines an overall cooling of about 12°C in the deep oceans with four main cooling periods. Used in conjunction with the benthic δ 18 O record, the magnesium temperature record indicates that the first major accumulation of Antarctic ice occurred rapidly in the earliest Oligocene (34 million years ago) and was not accompanied by a decrease in deep-sea temperatures.
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Cited by
Trends, Rhythms, and Aberrations in Global Climate 65 Ma to Present
Zachos, J., Pagani, M., Sloan, L., Thomas, E., & Billups, K. (2001) · Science · doi:10.1126/science.1059412 · Cited by 10,458
Westerhold, T., Marwan, N., Drury, A. J., Liebrand, D., Agnini, C., Anagnostou, E., Barnet, J. S. K., Bohaty, S. M., De Vleeschouwer, D., Florindo, F., et al. (2020) · Science · doi:10.1126/science.aba6853 · Cited by 1,946
Self-citationThe geochemistry of carbonate diagenesis: The past, present and future
Swart, P. K. (2015) · Sedimentology · doi:10.1111/sed.12205 · Cited by 746
The Role of Mg 2+ as an Impurity in Calcite Growth
Davis, K. J., Dove, P. M., & De Yoreo, J. J. (2000) · Science · doi:10.1126/science.290.5494.1134 · Cited by 733
Climate sensitivity, sea level and atmospheric carbon dioxide
Hansen, J., Sato, M., Russell, G., & Kharecha, P. (2013) · Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences · doi:10.1098/rsta.2012.0294 · Cited by 660
Metadata
- Authors
- Lear, C. H., Elderfield, H., & Wilson, P. A.
- Venue
- Science
- Published
- 2000-01-14
- Volume
- 287
- Issue
- 5451
- Pages
- 269-272
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2157392485
- Cited by
- 1,098
- References
- 0
- FWCI
- 25.73
- Type
- journal article
- Language
- en
- Open access
- closed
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- Lear, C. H., Elderfield, H., & Wilson, P. A. (2000). Cenozoic Deep-Sea Temperatures and Global Ice Volumes from Mg/Ca in Benthic Foraminiferal Calcite. Science. https://doi.org/10.1126/science.287.5451.269
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
