Skip to content

Research at St Andrews

Assessing the biomineralization processes in the shell layers of modern brachiopods from oxygen isotopic composition and elemental ratios: implications for their use as paleoenvironmental proxies

Research output: Contribution to journalArticlepeer-review

Author(s)

Claire Rollion-Bard, Sara Milner Garcia, Pierre Burckel, Lucia Angiolini, Hana Jurikova, Adam Tomašových, Daniela Henkel

School/Research organisations

Abstract

Fossil brachiopod shells are often used as valuable archives to reconstruct paleoenvironmental conditions in deep time. However, biomineralization processes can impact their fidelity as geochemical proxies. Brachiopod shells comprise an outer primary layer, a secondary fibrous layer and sometimes, a tertiary columnar layer. Therefore, it is essential to assess the potential effects of the biomineralization processes in each of the different shell microstructures of modern brachiopods. This study analyses the oxygen isotopic composition together with Li/Ca, Na/Ca Mg/Ca and Sr/Ca data at high spatial (20-50 μm) resolution in seven modern brachiopod species, focusing on differences between the primary, secondary and tertiary layers. In all studied species, δ18O values of the outer primary layer are consistently out of equilibrium with seawater. Also, this shell layer is enriched in Li, Na, Mg and Sr. Contrary to the primary layer, the innermost secondary layer is near or at oxygen isotopic and elemental equilibrium with ambient seawater. The columnar tertiary shell layer, if present, has the least variable and the heaviest oxygen isotopic composition, within the range of equilibrium values with seawater. This tertiary layer, however, is depleted in minor and trace elements relative to the other shell layers. Thus, the tertiary layer is more suitable for oxygen isotopic studies, whereas the innermost secondary layer of the most mature parts of the shell is the best target in two-layered shells. While we do not observe any clear interspecific relationships between Mg/Ca and Sr/Ca ratios, on one hand, and environmental parameters such as temperature, salinity and pH, on the other hand, there is a positive interspecific relationship between Na/Ca and salinity and a negative interspecific relationship between Li/Ca and temperature, suggesting their potential use as proxies of physicochemical parameters of seawater.

Close

Details

Original languageEnglish
Pages (from-to)49-66
Number of pages18
JournalChemical Geology
Volume524
Early online date6 Jun 2019
DOIs
Publication statusPublished - 5 Oct 2019

    Research areas

  • Brachiopod, Element-to-calcium ratios, Oxygen isotopes, Proxy, Shell microstructure, Vital effects

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Permian–Triassic mass extinction pulses driven by major marine carbon cycle perturbations

    Jurikova, H., Gutjahr, M., Wallmann, K., Flögel, S., Liebetrau, V., Posenato, R., Angiolini, L., Garbelli, C., Brand, U., Wiedenbeck, M. & Eisenhauer, A., Nov 2020, In: Nature Geoscience. 13, p. 745–750

    Research output: Contribution to journalArticlepeer-review

  2. Incorporation of minor and trace elements into cultured brachiopods: implications for proxy application with new insights from a biomineralisation model

    Jurikova, H., Ippach, M., Liebetrau, V., Gutjahr, M., Krause, S., Büsse, S., Gorb, S. N., Henkel, D., Hiebenthal, C., Schmidt, M., Leipe, T., Laudien, J. & Eisenhauer, A., 1 Oct 2020, In: Geochimica et Cosmochimica Acta. 286, p. 418-440 23 p.

    Research output: Contribution to journalArticlepeer-review

  3. Ocean acidification during the early Toarcian extinction event: evidence from boron isotopes in brachiopods

    Müller, T., Jurikova, H., Gutjahr, M., Tomašových, A., Schlögl, J., Liebetrau, V., Duarte, L., Milovský, R., Suan, G., Mattioli, E., Pittet, B. & Eisenhauer, A., 13 Aug 2020, In: Geology. Early View, 5 p.

    Research output: Contribution to journalArticlepeer-review

  4. Early diagenetic imprint on temperature proxies in holocene corals: a case study from French Polynesia

    Rashid, R., Eisenhauer, A., Liebetrau, V., Fietzke, J., Böhm, F., Wall, M., Krause, S., Rüggeberg, A., Dullo, W-C., Jurikova, H., Samankassou, E. & Lazar, B., 22 Jul 2020, In: Frontiers in Earth Science. 8, 19 p., 301.

    Research output: Contribution to journalArticlepeer-review

  5. Boron in CaCO3 as a record of past seawater carbonate chemistry

    Henehan, M. & Jurikova, H., 1 Nov 2019, PAGES Magazine, 27, 2, p. 58-59.

    Research output: Contribution to specialist publicationArticle

Related by journal

  1. Highlights of the Goldschmidt Meeting, Heidelberg, 31 March–4 April 1996 in honor of A.W. Hofmann

    Hawkesworth, C. (ed.) & Arndt, N. (ed.), 1997, Chemical Geology, 139 360 p.

    Research output: Contribution to specialist publicationSpecial issue

Related by journal

  1. Silicate melt inclusions in the new millennium: A review of recommended practices for preparation, analysis, and data presentation

    Rose-koga, E. F., Bouvier, A., Gaetani, G. A., Wallace, P. J., Allison, C. M., Andrys, J. A., Angeles De La Torre, C. A., Barth, A., Bodnar, R. J., Bracco Gartner, A. J. J., Butters, D., Castillejo, A., Chilson-parks, B., Choudhary, B. R., Cluzel, N., Cottrell, E., Daly, A., Danyushevsky, L. V., Devitre, C. L., Drignon, M. J. & 51 others, France, L., Gaborieau, M., Garcia, M. O., Gatti, E., Genske, F. S., Hartley, M. E., Hughes, E. C., Iveson, A. A., Johnson, E. R., Kagoshima, T., Katzir, Y., Kawaguchi, M., Kawamoto, T., Kelley, K. A., Koornneef, J. M., Kurz, M. D., Laubier, M., Layne, G. D., Lerner, A., Lin, K., Liu, P., Lorenzo-merino, A., Luciani, N., Magalhães, N., Marschall, H. R., Michael, P. J., Monteleone, B. D., Moore, L. R., Moussallam, Y., Muth, M., Myers, M. L., Narváez, D. F., Navon, O., Newcombe, M. E., Nichols, A. R. L., Nielsen, R. L., Pamukcu, A., Plank, T., Rasmussen, D. J., Roberge, J., Schiavi, F., Schwartz, D., Shimizu, K., Shimizu, K., Shimizu, N., Thomas, J. B., Thompson, G. T., Tucker, J. M., Ustunisik, G., Waelkens, C. & Zhou, T., 5 Jun 2021, In: Chemical Geology. 570, p. 120145

    Research output: Contribution to journalArticlepeer-review

  2. Equilibria, kinetics, and boron isotope partitioning in the aqueous boric acid–hydrofluoric acid system

    Zeebe, R. & Rae, J. W. B., 20 Sep 2020, In: Chemical Geology. 550, 119693.

    Research output: Contribution to journalArticlepeer-review

  3. Geochemical fingerprints of seawater in the Late Mesoproterozoic Midcontinent Rift, North America: life at the marine-land divide

    Stueeken, E. E., Jones, S., Raub, T. D., Prave, T., Rose, C. V., Linnekogel, S. & Cloutier, J., 20 Oct 2020, In: Chemical Geology. 553, 119812.

    Research output: Contribution to journalArticlepeer-review

  4. The stability of divalent Ge in silicate melts and its geochemical properties

    Mare, E., O'Neill, H. S. C., Berry, A. & Glover, C., 20 Jan 2020, In: Chemical Geology. 532, 119306.

    Research output: Contribution to journalArticlepeer-review

  5. Titanite petrochronology linked to phase equilibrium modelling constrains tectono-thermal events in the Akia Terrane, West Greenland

    Kirkland, C. L., Yakymchuk, C., Gardiner, N. J., Szilas, K., Hollis, J., Olierook, H. & Steenfelt, A., 20 Mar 2020, In: Chemical Geology. 536, 119467.

    Research output: Contribution to journalArticlepeer-review

ID: 269138688

Top