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    Use of the Boron partition coefficient ‘K<sub>D</sub>’ and B/Ca from planktonic foraminifera in the estimation of past seawater pCO<sub>2</sub>

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    Geochem_J_49_229a.pdf (259.5Kb)
    Date
    2015
    Author
    Naik, S.S.
    Naidu, P.D.
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    Abstract
    We assess the usefulness of the empirical boron partition coefficient, K<sub>D</sub> and B/Ca measured from planktonic foraminifera in estimation of pCO<sub>2</sub> using three different relationships between K<sub>D</sub> and temperature derived from various studies. Two sediment cores spanning the last 22 kyr were utilised, one from the intense CO<sub>2</sub> source region of the Western Arabian Sea (WAS) and another from the Eastern Arabian Sea (EAS). The sea-air difference in pCO<sub>2</sub> at these sites shows results contrary to the present day scenario. Moreover the reconstructions using the three K<sub>D</sub> relationships lead to assorted results which suggests that the K<sub>D</sub> approach may not be suitable in paleo-pCO<sub>2</sub> reconstructions
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    http://drs.nio.org/drs/handle/2264/4785
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