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Oxygen isotopes in foraminifera: Overview and historical review

Pearson, Paul Nicholas ORCID: 2012. Oxygen isotopes in foraminifera: Overview and historical review. Paleontological Society Papers 18 , pp. 1-38.

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—Foraminiferal tests are a common component of many marine sediments. The oxygen isotope ratio (δ 18 O) of test calcite is frequently used to reconstruct aspects of their life environment. The δ 18 O depends mainly on the isotope ratio of the water it is precipitated from, the temperature of calcification, and, to a lesser extent, the carbonate ion concentration. Foraminifera and other organisms can potentially preserve their original isotope ratio for many millions of years, although diagenetic processes can alter the ratios. Work on oxygen isotope ratios of foraminifera was instrumental in the discovery of the orbital theory of the ice ages and continues to be widely used in the study of rapid climate change. Compilations of deep sea benthic foraminifer oxygen isotopes have revealed the long history of global climate change over the past 100 million years. Planktonic foraminifer oxygen isotopes are used to investigate the history of past sea surface temperatures, revealing the extent of past 'greenhouse' warming and global sea surface temperatures.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Earth and Environmental Sciences
Subjects: Q Science > QH Natural history
ISSN: 1089-3326
Related URLs:
Date of First Compliant Deposit: 30 March 2016
Last Modified: 21 Oct 2022 10:58

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