Surface-Water Freshening and High-Latitude River Discharge in the Eocene North Sea

Zacke, Anne, Voigt, Silke, Joachimski, Michael M., Gale, Andrew S., Ward, David J., Tütken, Thomas, Journal of the Geological Society

Abstract: A shark-tooth apatite δ^sup 18^O record of the early Palaeogene North Sea reflects changes in regional hydrography by showing variable temperatures and salinities. A 2-4 Ma period in the early Eocene was particularly influenced by substantial surface-water freshening, indicated by a 3-4[per thousand] reduction of δ^sup 18^O values. The magnitude of the δ^sup 18^O decrease indicates a depletion in ^sup 18^O of surface waters by 2-3[per thousand] relative to Eocene mean ocean water. This value is lower than that of coeval lakes reconstructed from freshwater gastropod δ^sup 18^O values from the Paris Basin, suggesting that large rivers with high-latitude catchment areas drained …

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Publication information: Article title: Surface-Water Freshening and High-Latitude River Discharge in the Eocene North Sea. Contributors: Zacke, Anne - Author, Voigt, Silke - Author, Joachimski, Michael M. - Author, Gale, Andrew S. - Author, Ward, David J. - Author, Tütken, Thomas - Author. Journal title: Journal of the Geological Society. Volume: 166. Publication date: September 2009. Page number: 969+. © Geological Society Publishing House Jan 2009. Provided by ProQuest LLC. All Rights Reserved.

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