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BG | Articles | Volume 17, issue 7
Biogeosciences, 17, 1731–1744, 2020
https://doi.org/10.5194/bg-17-1731-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 17, 1731–1744, 2020
https://doi.org/10.5194/bg-17-1731-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 03 Apr 2020

Research article | 03 Apr 2020

Oxygen isotope composition of waters recorded in carbonates in strong clumped and oxygen isotopic disequilibrium

Caroline Thaler et al.

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Cited articles

Affek, H. P., Bar-Matthews, M., Ayalon, A., Matthews, A., and Eiler, J. M.: Glacial/interglacial temperature variations in Soreq cave speleothems as recorded by “clumped isotope” thermometry, Geochim. Cosmochim. Ac., 72, 5351–5360, https://doi.org/10.1016/j.gca.2008.06.031, 2008. 
Affek, H. P.: Clumped isotopic equilibrium and the rate of isotope exchange between CO2 and water, Am. J. Sci., 313, 309–325, https://doi.org/10.2475/04.2013.02, 2013. 
Affek, H. P. and Zaarur, S.: Kinetic isotope effect in CO2 degassing: Insight from clumped and oxygen isotopes in laboratory precipitation experiments, Geochim. Cosmochim. Ac., 143, 319–330, https://doi.org/10.1016/j.gca.2014.08.005, 2014. 
Affek, H. P., Matthews, A., Ayalon, A., Bar-Matthews, M., Burstyn, Y., Zaarur, S., and Zilberman, T.: Accounting for kinetic isotope effects in Soreq Cave (Israel) speleothems, Geochim. Cosmochim. Ac., 143, 303–318, https://doi.org/10.1016/j.gca.2014.08.008, 2014. 
Bajnai, D., Fiebig, J., Tomašových, A., Garcia, S. M., Rollion-Bard, C., Raddatz, J., Löffler, N., Primo-Ramos, C., and Brand, U.: Assessing kinetic fractionation in brachiopod calcite using clumped isotopes, Sci. Rep.-UK, 8, 533, https://doi.org/10.1038/s41598-017-17353-7, 2018. 
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Paleoenvironment reconstructions, retrieved from δ18O and Δ47 values measured in carbonate, are compromised when crystallization occurs in isotopic disequilibrium. We show that some paleoenvironmental information can still be retrieved from these paired disequilibrium Δ47 and δ18O values. The possibility of retrieving information on paleowaters, sediments' interstitial waters, or organisms' body water at the carbonate precipitation loci will help understand past Earth and life evolution.
Paleoenvironment reconstructions, retrieved from δ18O and Δ47 values measured in carbonate,...
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