Journal cover Journal topic
Biogeosciences An interactive open-access journal of the European Geosciences Union
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Volume 13, issue 23
Biogeosciences, 13, 6487–6505, 2016
https://doi.org/10.5194/bg-13-6487-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 13, 6487–6505, 2016
https://doi.org/10.5194/bg-13-6487-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 12 Dec 2016

Research article | 12 Dec 2016

Carbonate “clumped” isotope signatures in aragonitic scleractinian and calcitic gorgonian deep-sea corals

Justine Kimball et al.
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Adkins, J. F., Boyle, E. A., Curry, W. B., and Lutringer, A.: Stable isotopes in deep-sea corals and a new mechanism for “vital effects”, Geochim. Cosmochim. Ac., 6, 129–1143, 2003.
Affek, H. P.: Clumped isotope equilibrium and the rate of isotope exchange between CO2 and water, Am. J. Sci., 313, 309–313, 2013.
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.
Allemand, D., Cuif, J.-P., Watabe, N., Oishi, M., and Kawaguchi, T.: The organic matrix of skeletal structures of the Mediterranean Red Coral, Corallium rubrum, in: Biomineralisation '93, edited by: Allemand, D., Cuif, J.-P., 7th Int Symp Biomineralisation, Bulletin de l'Institut oceanographique, Monaco, Numero special 14, 129–140, 1994.
Allison, N. and Finch, A.: EIMF δ11B, Sr, Mg and B in a modern Porites coral: the relationship between calcification site pH and skeletal chemistry, Geochim. Cosmochim. Ac., 74, 1790–1800, 2010.
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Deep-sea corals are a potentially valuable archive of temperature and ocean chemistry. We analyzed clumped isotope signatures (Δ47) in live-collected aragonitic scleractinian and high-Mg calcitic gorgonian deep-sea corals and compared results to published data and found offsets between taxa. The observed patterns in deep-sea corals may record distinct mineral equilibrium signatures due to very slow growth rates, kinetic isotope effects, and/or variable acid digestion fractionation factors.
Deep-sea corals are a potentially valuable archive of temperature and ocean chemistry. We...
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