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Oceanic p H control on the boron isotopic composition of foraminifera: Evidence from culture experiments
Abstract
Culture experiments were carried out with the species Orbulina universa at four different p H values (7.70±0.05, 8.15±0.05, 8.60±0.05, and 9.00±0.10) in order to establish the p H‐dependence of boron isotope fractionation between seawater and foraminifera. A clear relationship between the boron isotopic composition of the foraminifera and the p H of the seawater culture solutions was found, showing heavier boron isotopic composition at higher p H. This finding supports the viability of boron isotopes as a paleo‐p H tool. It is important to note that Orbulina universa cultured in natural seawater, as well as those obtained from coretop samples, have a significantly lighter boron isotopic ratio than Globigerinoides sacculifer from coretop samples, suggesting that at least for this species, a vital effect is active.
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Cited by
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Doney, S. C., Fabry, V. J., Feely, R. A., & Kleypas, J. A. (2009) · Annual Review of Marine Science · doi:10.1146/annurev.marine.010908.163834 · Cited by 4,173
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Pearson, P. N., & Palmer, M. R. (2000) · Nature · doi:10.1038/35021000 · Cited by 1,771
The geochemistry of carbonate diagenesis: The past, present and future
Swart, P. K. (2015) · Sedimentology · doi:10.1111/sed.12205 · Cited by 746
Erez, J. (2003) · Reviews in Mineralogy and Geochemistry · doi:10.2113/0540115 · Cited by 555
Metadata
- Authors
- Sanyal, A., Hemming, N. G., Broecker, W. S., Lea, D. W., Spero, H. J., & Hanson, G. N.
- Venue
- Paleoceanography
- Publisher
- American Geophysical Union (AGU)
- Published
- 1996-10
- Volume
- 11
- Issue
- 5
- Pages
- 513-517
- ISSN
- 0883-8305 (ISSN-L)
- 1944-9186
- OpenAlex
- W2109836886
- Cited by
- 224
- References
- 0
- FWCI
- 3.05
- Type
- journal article
- Language
- en
- Open access
- closed
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- Sanyal, A., Hemming, N. G., Broecker, W. S., Lea, D. W., Spero, H. J., & Hanson, G. N. (1996). Oceanic p H control on the boron isotopic composition of foraminifera: Evidence from culture experiments. Paleoceanography. https://doi.org/10.1029/96pa01858
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