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Laboratory-grown coccoliths exhibit no vital effect in clumped isotope (Δ47) composition on a range of geologically relevant temperatures

Abstract:

The carbonate clumped isotope (or Δ47) thermometer relies on the temperature dependence of the abundance of 13C18O16O22− ion groups within the mineral lattice. This proxy shows tremendous promise to reconstruct past sea surface temperatures (SSTs), but requires calibration of the relationship between Δ47 and calcification temperatures. Specifically, it is important to determine whether biologically-driven fractionation (the so-called “vital effect”) overprints Δ47 values, as reported in some ...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Accepted manuscript

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Publisher copy:
10.1016/j.gca.2017.02.025

Authors


Bonifacie, M More by this author
More by this author
Department:
Oxford, MPLS, Earth Sciences
Cartigny, P More by this author
Calmels, D More by this author
Publisher:
Elsevier Publisher's website
Journal:
Geochimica et Cosmochimica Acta Journal website
Volume:
208
Pages:
335-353
Publication date:
2017-02-27
Acceptance date:
2017-02-18
DOI:
ISSN:
0016-7037
Pubs id:
pubs:691031
URN:
uri:2afbe4c7-7fb6-43e7-82e7-a7e835059a6f
UUID:
uuid:2afbe4c7-7fb6-43e7-82e7-a7e835059a6f
Local pid:
pubs:691031

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