Song, H, Wignall, PB orcid.org/0000-0003-0074-9129, Song, H et al. (2 more authors) (2019) Seawater Temperature and Dissolved Oxygen over the Past 500 Million Years. Journal of Earth Science, 30 (2). pp. 236-243. ISSN 1674-487X
Abstract
Ocean temperature and dissolved oxygen concentrations are critical factors that control ocean productivity, carbon and nutrient cycles, and marine habitat. However, the evolution of these two factors in the geologic past are still unclear. Here, we use a new oxygen isotope database to establish the sea surface temperature (SST) curve in the past 500 million years. The database is composed of 22 796 oxygen isotope values of phosphatic and calcareous fossils. The result shows two prolonged cooling events happened in the Late Paleozoic and Late Cenozoic, coinciding with two major ice ages indicated by continental glaciation data, and seven global warming events that happened in the Late Cambrian, Silurian-Devonian transition, Late Devonian, Early Triassic, Toarcian, Late Cretaceous, and Paleocene-Eocene transition. The SSTs during these warming periods are about 5–30 °C higher than the present-day level. Oxygen contents of shallow seawater are calculated from temperature, salinity, and atmospheric oxygen. The results show that major dissolved oxygen valleys of surface seawater coincide with global warming events and ocean anoxic events. We propose that the combined effect of temperature and dissolved oxygen account for the long-term evolution of global oceanic redox state during the Phanerozoic.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © China University of Geosciences (Wuhan) and Springer-Verlag GmbH Germany, Part of Springer Nature 2019. This is an author produced version of a paper published in the Journal of Earth Science. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | sea surface temperature; global warming; ocean anoxic event; dissolved oxygen; Phanerozoic |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Institute for Applied Geosciences (IAG) (Leeds) |
Funding Information: | Funder Grant number NERC NE/P013724/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 02 Jul 2019 13:47 |
Last Modified: | 02 Jul 2019 13:47 |
Status: | Published |
Publisher: | Springer |
Identification Number: | 10.1007/s12583-018-1002-2 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:148044 |