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Transient shoaling, over-deepening and settling of the calcite compensation depth at the eocene-oligocene transition

The major Cenozoic shift from a shallow (∼3-4 km) to deep (∼4.5 km) calcite compensation depth (CCD) occurred at the Eocene-Oligocene Transition (∼34 Ma), suggesting a strong relationship between calcium carbonate (CaCO3) cycling and Antarctic glaciation. However, the linkages between these two even...

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Main Authors: Taylor, Victoria (Author) , Westerhold, T. (Author) , Bohaty, Steven M. (Author) , Backman, J. (Author) , Dunkley Jones, T. (Author) , Edgar, K. M. (Author) , Egan, K. E. (Author) , Lyle, M. (Author) , Pälike, H. (Author) , Röhl, U. (Author) , Zachos, J. (Author) , Wilson, Paul (Author)
Format: Article (Journal)
Language:English
Published: 18 May 2023
In: Paleoceanography and paleoclimatology
Year: 2023, Volume: 38, Issue: 6, Pages: 1-15
ISSN:2572-4525
DOI:10.1029/2022PA004493
Online Access:kostenfrei
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Author Notes:V.E. Taylor, T. Westerhold, S.M. Bohaty, J. Backman, T. Dunkley Jones, K.M. Edgar, K.E. Egan, M. Lyle, H. Pälike, U. Röhl, J. Zachos, and P.A. Wilson
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Summary:The major Cenozoic shift from a shallow (∼3-4 km) to deep (∼4.5 km) calcite compensation depth (CCD) occurred at the Eocene-Oligocene Transition (∼34 Ma), suggesting a strong relationship between calcium carbonate (CaCO3) cycling and Antarctic glaciation. However, the linkages between these two events are debated. Here we present new records of bulk sediment stable isotope and carbonate composition from a depth transect of sites in the low-latitude Pacific Ocean and one site from the South Atlantic Ocean, together with a new benthic foraminiferal stable isotope record (δ13Cb and δ18Ob) from the Pacific where the sedimentary sequence is most expanded. ...
Item Description:Gesehen am 22.11.2023
Physical Description:Online Resource
ISSN:2572-4525
DOI:10.1029/2022PA004493

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