2015
DOI: 10.1002/2015gc005975
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A new method for calibrating a boron isotope paleo‐pH proxy using massive Porites corals

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Cited by 22 publications
(11 citation statements)
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“…Boron is lost from the oceans in a variety of pathways, of which incorporation in carbonates is the best known and the basis for the use of δ 11 B as an indicator of past changes in the pH of seawater [ Vengosh et al ., ; Hemming and Hanson , ]. Numerous attempts have made to calibrate and evaluate the magnitude of the selective 10 B incorporation into biogenic skeletons and its dependence on boron speciation and thus pH [ Spivack et al ., ; Lemarchand et al ., ; Sanyal et al ., ; Hönisch et al ., , ; Hemming and Hönisch , ; Kubota et al ., ]. While the boron isotope ratios of corals correspond to an apparent boron species fractionation magnitude of ~20‰ determined earlier by Kakihana et al .…”
Section: Background Geochemical Cycle For Boronmentioning
confidence: 71%
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“…Boron is lost from the oceans in a variety of pathways, of which incorporation in carbonates is the best known and the basis for the use of δ 11 B as an indicator of past changes in the pH of seawater [ Vengosh et al ., ; Hemming and Hanson , ]. Numerous attempts have made to calibrate and evaluate the magnitude of the selective 10 B incorporation into biogenic skeletons and its dependence on boron speciation and thus pH [ Spivack et al ., ; Lemarchand et al ., ; Sanyal et al ., ; Hönisch et al ., , ; Hemming and Hönisch , ; Kubota et al ., ]. While the boron isotope ratios of corals correspond to an apparent boron species fractionation magnitude of ~20‰ determined earlier by Kakihana et al .…”
Section: Background Geochemical Cycle For Boronmentioning
confidence: 71%
“…Boron is lost from the oceans in a variety of pathways, of which incorporation in carbonates is the best known and the basis for the use of δ 11 B as an indicator of past changes in the pH of seawater [Vengosh et al, 1991;Hemming and Hanson, 1992]. Numerous attempts have made to calibrate and evaluate the magnitude of the selective 10 B incorporation into biogenic skeletons and its dependence on boron speciation and thus pH Lemarchand et al, 2000;Sanyal et al, 2000;Hönisch et al, 2007Hönisch et al, , 2009Hemming and Hönisch, 2007;Kubota et al, 2015]. While the boron isotope ratios of corals correspond to an apparent boron species fractionation magnitude of~20‰ determined earlier by Kakihana et al [1977], the boron isotopic ratios of benthic foraminifera are consistent with a higher fractionation factor of 26-27‰ [Hönisch et al, 2008;Rae et al, 2011], which is consistent with direct isotopic measurement of boron species through separation by RO membranes [Nir et al, 2015].…”
Section: The Oceansmentioning
confidence: 99%
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“…The isotope ratios of boron show large variations in nature (Fig. 1), and are of great interest to geo-, environmental, and marine scientists (Spivack, & Palmer, Edmond, 1987;Spivack, You, & Smith, 1993;Spivack & You, 1997;Lemarchand et al, 2002b;Kubota et al, 2015). These include studies in hydrology for ground water contamination by sea water (Barth, 1997); to assess the impact of artificial recharge on water sources; to identify mechanisms of adsorption/desorption on clay minerals; and in the environment as potential tracers of contamination of ground water with coal combustion residues, etc.…”
Section: Introductionmentioning
confidence: 99%
“…Corals calcify from an isolated fluid located between the living tissue and the existing skeleton (Barnes, 1970;Cohen and McConnaughey, 2003;Venn et al, 2011;Tambutté et al, 2012). Up-regulation of pH within this fluid, potentially achieved via proton pumping and/or symbiont photosynthesis, elevates the saturation state with respect to aragonite ( Ar ), contributing to rapid nucleation and growth of aragonite crystals (Gattuso et al, 1999;Cohen and McConnaughey, 2003;Al-Horani et al, 2003;McCulloch et al, 2012;Kubota et al, 2015).…”
Section: Introductionmentioning
confidence: 99%