Journal cover Journal topic
Biogeosciences An interactive open-access journal of the European Geosciences Union
Journal topic
BG | Volume 15, issue 16
Biogeosciences, 15, 4905–4922, 2018
https://doi.org/10.5194/bg-15-4905-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 15, 4905–4922, 2018
https://doi.org/10.5194/bg-15-4905-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 20 Aug 2018

Research article | 20 Aug 2018

A systematic look at chromium isotopes in modern shells – implications for paleo-environmental reconstructions

Robert Frei et al.
Related subject area  
Paleobiogeoscience: Proxy use, Development & Validation
Organic-carbon-rich sediments: benthic foraminifera as bio-indicators of depositional environments
Elena Lo Giudice Cappelli, Jessica Louise Clarke, Craig Smeaton, Keith Davidson, and William Edward Newns Austin
Biogeosciences, 16, 4183–4199, https://doi.org/10.5194/bg-16-4183-2019,https://doi.org/10.5194/bg-16-4183-2019, 2019
Short summary
Strong correspondence between nitrogen isotope composition of foliage and chlorin across a rainfall gradient: implications for paleo-reconstruction of the nitrogen cycle
Sara K. E. Goulden, Naohiko Ohkouchi, Katherine H. Freeman, Yoshito Chikaraishi, Nanako O. Ogawa, Hisami Suga, Oliver Chadwick, and Benjamin Z. Houlton
Biogeosciences, 16, 3869–3882, https://doi.org/10.5194/bg-16-3869-2019,https://doi.org/10.5194/bg-16-3869-2019, 2019
Short summary
Environmental and biological controls on Na∕Ca ratios in scleractinian cold-water corals
Nicolai Schleinkofer, Jacek Raddatz, André Freiwald, David Evans, Lydia Beuck, Andres Rüggeberg, and Volker Liebetrau
Biogeosciences, 16, 3565–3582, https://doi.org/10.5194/bg-16-3565-2019,https://doi.org/10.5194/bg-16-3565-2019, 2019
Short summary
Depth habitat of the planktonic foraminifera Neogloboquadrina pachyderma in the northern high latitudes explained by sea-ice and chlorophyll concentrations
Mattia Greco, Lukas Jonkers, Kerstin Kretschmer, Jelle Bijma, and Michal Kucera
Biogeosciences, 16, 3425–3437, https://doi.org/10.5194/bg-16-3425-2019,https://doi.org/10.5194/bg-16-3425-2019, 2019
Short summary
Temporal variability in foraminiferal morphology and geochemistry at the West Antarctic Peninsula: a sediment trap study
Anna Mikis, Katharine R. Hendry, Jennifer Pike, Daniela N. Schmidt, Kirsty M. Edgar, Victoria Peck, Frank J. C. Peeters, Melanie J. Leng, Michael P. Meredith, Chloe L. Todd, Sharon Stammerjohn, and Hugh Ducklow
Biogeosciences, 16, 3267–3282, https://doi.org/10.5194/bg-16-3267-2019,https://doi.org/10.5194/bg-16-3267-2019, 2019
Short summary
Cited articles  
Beaver, P. E., Bucher, D. J., and Joannes-Boyau, R.: Growth patterns of three bivalve species targeted by the Ocean Cockle Fishery, southern New South Wales: Eucrassatella kingicola (Lamarck, 1805); Glycymeris grayana (Dunker, 1857); and Callista (Notocallista) kingii (Gray, 1827), Molluscan Res., 37, 104–112, 2017. 
Belcher, A. M., Wu, X. H., Christensen, R. J., Hansma, P. K., Stucky, G. D., and Morse, D. E.: Control of crystal phase switching and orientation by soluble mollusc-shell proteins, Nature, 381, 56–58, 1996. 
Bonnand, P., Parkinson, I. J., James, R. H., Karjalainen, A.-M., and Fehr, M. A.: Accurate and precise determination fo stable Cr isotope compositions in carbonates by double spike MC-ICP-MS, J. Anal. Atom. Spectrom., 26, 528–536, 2011. 
Bonnand, P., James, R. H., Parkinson, I. J., Connelly, D. P., and Fairchild, I. J.: The chromium isotopic composition of seawater and marine carbonates, Earth Planet. Sc. Lett., 382, 10–20, 2013. 
Checa, A.: A new model for periostracum and shell formation in Unionidae (Bivalvia, Mollusca), Tissue Cell, 32, 405–416, 2000. 
Publications Copernicus
Download
Short summary
The reconstruction of paleo-redox conditions of seawater has the potential to link to climatic changes on land and therefore to contribute to our understanding of past climate change. The redox-sensitive chromium isotope system is applied to marine calcifiers in order to characterize isotope offsets that result from vital processes during calcification processes and which can be eventually used in fossil equivalents to reconstruct past seawater compositions.
The reconstruction of paleo-redox conditions of seawater has the potential to link to climatic...
Citation