Dual clumped isotope thermometry resolves kinetic biases in carbonate formation temperatures

David Bajnai (), Weifu Guo, Christoph Spötl, Tyler B. Coplen, Katharina Methner, Niklas Löffler, Emilija Krsnik, Eberhard Gischler, Maximilian Hansen, Daniela Henkel, Gregory D. Price, Jacek Raddatz, Denis Scholz and Jens Fiebig ()
Additional contact information
David Bajnai: Goethe University Frankfurt
Weifu Guo: Woods Hole Oceanographic Institution
Christoph Spötl: University of Innsbruck
Tyler B. Coplen: US Geological Survey
Katharina Methner: Senckenberg Biodiversity and Climate Research Centre (SBiK-F)
Niklas Löffler: Goethe University Frankfurt
Emilija Krsnik: Goethe University Frankfurt
Eberhard Gischler: Goethe University Frankfurt
Maximilian Hansen: Johannes Gutenberg University Mainz
Daniela Henkel: GEOMAR Helmholtz Centre for Ocean Research
Gregory D. Price: University of Plymouth, Drake Circus
Jacek Raddatz: Goethe University Frankfurt
Denis Scholz: Johannes Gutenberg University Mainz
Jens Fiebig: Goethe University Frankfurt

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract Surface temperature is a fundamental parameter of Earth’s climate. Its evolution through time is commonly reconstructed using the oxygen isotope and the clumped isotope compositions of carbonate archives. However, reaction kinetics involved in the precipitation of carbonates can introduce inaccuracies in the derived temperatures. Here, we show that dual clumped isotope analyses, i.e., simultaneous ∆47 and ∆48 measurements on the single carbonate phase, can identify the origin and quantify the extent of these kinetic biases. Our results verify theoretical predictions and evidence that the isotopic disequilibrium commonly observed in speleothems and scleractinian coral skeletons is inherited from the dissolved inorganic carbon pool of their parent solutions. Further, we show that dual clumped isotope thermometry can achieve reliable palaeotemperature reconstructions, devoid of kinetic bias. Analysis of a belemnite rostrum implies that it precipitated near isotopic equilibrium and confirms the warmer-than-present temperatures during the Early Cretaceous at southern high latitudes.

Date: 2020
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-020-17501-0 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-17501-0

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-020-17501-0

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().