Updated calibration of the clumped isotope thermometer in planktonic and benthic foraminifera

Peral, Marion; Daëron, Mathieu; Blamart, Dominique; Bassinot, Franck; Dewilde, Fabien; Smialkowski, Nicolas; Isguder, Gulay; Bonnin, Jérôme; Jorissen, Frans; Kissel, Catherine; Michel, Élisabeth; Riveiros, Natalia Vázquez; Waelbroeck, C.

doi:10.1016/j.gca.2018.07.016

Cited by 85 publications

(224 citation statements)

References 80 publications

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“…We used the updated version of the Kele calibration (Δ 47 = [0.04451 ± 0.001004 × 10 6 ]/T 2 + [0.171 ± 0.01081]; Bernasconi et al, ), after recalculating the calibration set with the Brand parameters (Daëron et al, ). This calibration is fully consistent with the recent calibration developed for planktonic and benthic foraminifera of Peral et al ().…”

Section: Methodssupporting

confidence: 90%

Comparing Seawater Temperature Proxy Records for the Past 90 Myrs From the Shallow Shelf Record Bass River, New Jersey

Bar

Nooijer

Schouten

et al. 2019

Paleoceanog and Paleoclimatol

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We present a multiproxy (foraminifer Mg/Ca, δ18O, ∆47, and Sr/Ca, and biomarker TEX86H, MATmrs) low‐resolution paleotemperature record based on seven sets of high‐resolution time series from the late Cretaceous to Miocene from the Ocean Drilling Program Bass River site, New Jersey Shelf, North Atlantic. Along with insight into long‐term climate evolution, this allows testing for internal consistency between proxies. The bottom water temperatures (BWTs) reconstructed using benthic δ18O and Mg/Ca values show good agreement in recorded trends with the TEX86H sea surface and shallow subsurface temperature record, and with the stacked global benthic oxygen isotope record. The Mg/Ca‐based BWTs are higher than the δ18O‐based BWTs, likely due to uncertainty in the assumptions associated with the Mg/Ca calibration to seawater Mg/Ca. Absolute δ18O‐based BWT reconstructions are supported by clumped isotope paleothermometry. The agreement in main trends of the independent paleotemperature proxies indicates that the underlying assumed mechanisms for the different proxy relations to temperature stayed largely intact back to at least 90 Ma. Consistent differences in absolute temperature values highlight, however, that a better understanding of the individual proxies is required in order to achieve accurate absolute temperature reconstructions

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Section: Methodssupporting

confidence: 90%

Comparing Seawater Temperature Proxy Records for the Past 90 Myrs From the Shallow Shelf Record Bass River, New Jersey

Bar

Nooijer

Schouten

et al. 2019

Paleoceanog and Paleoclimatol

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“…However, despite the observations of Wacker et al () and the reanalysis of Defliese et al (), several workers have produced data that have shown there to be no dependence of the slope as a function of reaction temperature (Bajnai et al, ; Came et al, ; G. A. Henkes et al, ; Kelson et al, ). In addition, studies using common acid bath (Bonifacie et al, ; Peral et al, ) and the Kiel device (Breitenbach et al, ; Kele et al, ) have produced slopes similar to that produced in this study for samples reacted at 25 °C. While all these arguments suggest that the reaction temperature may not be responsible for differences in the slopes observed, this study shows that the 25 °C reaction produces a statistically steeper slope between precipitation temperature and Δ 47 values than carbonates reacted at 90 °C, similar to that predicted (Defliese et al, ).…”

Section: Discussionsupporting

confidence: 73%

Oxygen Isotopic Exchange Between CO₂ and Phosphoric Acid: Implications for the Measurement of Clumped Isotopes in Carbonates

Swart

Murray

Staudigel

et al. 2019

Geochem Geophys Geosyst

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Experiments have been conducted in which CO2 gases with varying C and O isotopic compositions and with stochastic and nonstochastic Δ47 values have been allowed to equilibrate with phosphoric acid of two concentrations in reaction vessels of varying dimensions at temperatures of 25 and 90 °C. Rates of 13C18O and 18O exchange between the CO2 and the phosphoric acid varied as a function of the length of exposure, volume of reaction vessel, acid strength, and difference of the initial Δ47 and δ18O values of the CO2 from theoretical equilibrium values. The Δ47 values were also altered by heated stainless steel surfaces such as those found within the Kiel device and other preparation systems. These results have been used to explain variations in the differences in the fractionation between 25 and 90 °C reported for calcite by different workers as well as differences in the slopes between temperature and Δ47 values produced by reacting samples at different temperatures (25 and 90 °C).

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“…10.1029/2018GC008127 standards"; Bernasconi et al, 2018;Breitenbach et al, 2018;Peral et al, 2018), or a combination of the two. We choose not to include older studies that require "retroactive" conversion to the absolute reference frame using in-house standards, although they could, in principle, be converted into the absolute reference frame using a secondary transfer function.…”

Section: Data Selectionmentioning

confidence: 99%

“…Additionally, background/pressure baseline correction and data reduction methods should be further investigated. While moving to a carbonate standard-based correction scheme would not necessarily reveal which of these slight differences in method is causing the remaining minor disagreements, their use has the promising potential to remove persistent interlab biases in both calibration and acid digestion fractionation data (Bernasconi et al, 2018;Peral et al, 2018).…”

Section: 1029/2018gc008127mentioning

confidence: 99%

Effects of Improved ¹⁷O Correction on Interlaboratory Agreement in Clumped Isotope Calibrations, Estimates of Mineral‐Specific Offsets, and Temperature Dependence of Acid Digestion Fractionation

Petersen

Defliese

Saenger

et al. 2019

Geochem Geophys Geosyst

176

281

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The clumped isotopic composition of carbonate‐derived CO2 (denoted Δ47) is a function of carbonate formation temperature and in natural samples can act as a recorder of paleoclimate, burial, or diagenetic conditions. The absolute abundance of heavy isotopes in the universal standards VPDB and VSMOW (defined by four parameters: R13VPDB, R17VSMOW, R18VSMOW, and λ) impact calculated Δ47 values. Here, we investigate whether use of updated and more accurate values for these parameters can remove observed interlaboratory differences in the measured T‐Δ47 relationship. Using the updated parameters, we reprocess 14 published calibration data sets measured in 11 different laboratories, representing many mineralogies, bulk compositions, sample types, reaction temperatures, and sample preparation and analysis methods. Exploiting this large composite data set (n = 1,253 sample replicates), we investigate the possibility for a “universal” clumped isotope calibration. We find that applying updated parameters improves the T‐Δ47 relationship (reduces residuals) within most labs and improves overall agreement but does not eliminate all interlaboratory differences. We reaffirm earlier findings that different mineralogies do not require different calibration equations and that cleaning procedures, method of pressure baseline correction, and mass spectrometer type do not affect interlaboratory agreement. We also present new estimates of the temperature dependence of the acid digestion fractionation for Δ47 (Δ*25‐X), based on combining reprocessed data from four studies, and new theoretical equilibrium values to be used in calculation of the empirical transfer function. Overall, we have ruled out a number of possible causes of interlaboratory disagreement in the T‐Δ47 relationship, but many more remain to be investigated.

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Updated calibration of the clumped isotope thermometer in planktonic and benthic foraminifera

Abstract: Please note that this is an author-produced PDF of an article accepted for publication following peer review. The definitive publisher-authenticated version is available on the publisher Web site.

Cited by 85 publications

References 80 publications

Comparing Seawater Temperature Proxy Records for the Past 90 Myrs From the Shallow Shelf Record Bass River, New Jersey

Comparing Seawater Temperature Proxy Records for the Past 90 Myrs From the Shallow Shelf Record Bass River, New Jersey

Oxygen Isotopic Exchange Between CO₂ and Phosphoric Acid: Implications for the Measurement of Clumped Isotopes in Carbonates

Effects of Improved ¹⁷O Correction on Interlaboratory Agreement in Clumped Isotope Calibrations, Estimates of Mineral‐Specific Offsets, and Temperature Dependence of Acid Digestion Fractionation

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Updated calibration of the clumped isotope thermometer in planktonic and benthic foraminifera

Abstract: Please note that this is an author-produced PDF of an article accepted for publication following peer review. The definitive publisher-authenticated version is available on the publisher Web site.

Cited by 85 publications

References 80 publications

Comparing Seawater Temperature Proxy Records for the Past 90 Myrs From the Shallow Shelf Record Bass River, New Jersey

Comparing Seawater Temperature Proxy Records for the Past 90 Myrs From the Shallow Shelf Record Bass River, New Jersey

Oxygen Isotopic Exchange Between CO2 and Phosphoric Acid: Implications for the Measurement of Clumped Isotopes in Carbonates

Effects of Improved 17O Correction on Interlaboratory Agreement in Clumped Isotope Calibrations, Estimates of Mineral‐Specific Offsets, and Temperature Dependence of Acid Digestion Fractionation

Contact Info

Product

Resources

About

Oxygen Isotopic Exchange Between CO₂ and Phosphoric Acid: Implications for the Measurement of Clumped Isotopes in Carbonates

Effects of Improved ¹⁷O Correction on Interlaboratory Agreement in Clumped Isotope Calibrations, Estimates of Mineral‐Specific Offsets, and Temperature Dependence of Acid Digestion Fractionation