Skip to content

Research at St Andrews

Reproducibility of minor and trace element determinations in Porites coral skeletons by secondary ion mass spectrometry

Research output: Contribution to journalArticle

DOI

Abstract

Secondary ion mass spectrometry (SIMS) can be used to analyze selectively the geochemistry of pristine structures in diagenetically altered fossil corals allowing accurate reconstruction of past climates. However, only a small fraction of the aragonite precipitated by a single coral polyp is analyzed by SIMS. We evaluate the reproducibility of SIMS-generated Sr/Ca, Mg/Ca, and Ba/Ca records, both within and between modern corals. We find no evidence that crystal orientation in the analyzed volume affects these determinations. Corals are heterogeneous with respect to Sr, Mg, and Ba (at the scale analyzed by SIMS) and we are unable to correlate the trace and minor element variations observed between individual analyses along two parallel transects in the same coral. We observe good agreement in mean Sr/Ca and Ba/Ca between SIMS transects analyzing skeleton deposited over comparable periods, both within and between coral skeletons of comparable growth rates. Our data indicate that SIMS analysis can be used to produce a reproducible estimate of skeletal Sr and Ba both within and between corals. We observe good agreement in mean Mg/Ca between parallel SIMS transects within a coral but significant differences in the mean Mg/Ca between different corals. The typical error (2 sigma) of 100 SIMS Sr/Ca analyses across single annual bands of modern Hawaiian corals is equivalent to an SST error of +/- 0.6 degrees C under the conditions used here.

Close

Details

Original languageEnglish
Article numberQ04003
Pages (from-to)-
Number of pages10
JournalGeochemistry, Geophysics, Geosystems
Volume10
DOIs
Publication statusPublished - 1 Apr 2009

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

View graph of relations

Related by author

  1. The effect of ocean acidification on tropical coral calcification: insights from calcification fluid DIC chemistry

    Allison, N., Cole, C., Hintz, C., Hintz, K., Rae, J. & Finch, A., 10 Oct 2018, In : Chemical Geology. 497, p. 162-169 8 p.

    Research output: Contribution to journalArticle

  2. Corals concentrate dissolved inorganic carbon to facilitate calcification

    Allison, N., Cohen, I., Finch, A. A., Erez, J. & Tudhope, A. W., 22 Dec 2014, In : Nature Communications. 5, 5741.

    Research output: Contribution to journalArticle

Related by journal

  1. Geochemistry, Geophysics, Geosystems (Journal)

    Nora Nell Hanson (Reviewer)
    2014

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

Related by journal

  1. Generation of Earth's early continents from a relatively cool Archean mantle

    Piccolo, A., Palin, R. M., Kaus, B. J. P. & White, R. W., 1 Apr 2019, In : Geochemistry, Geophysics, Geosystems. Early View

    Research output: Contribution to journalArticle

  2. Mixing and crystal scavenging in the Main Ethiopian Rift revealed by trace element systematics in feldspars and glasses

    Iddon, F., Jackson, C., Hutchison, W., Fontijn, K., Pyle, D. M., Mather, T. A., Yirgu, G. & Edmonds, M., 11 Jan 2019, In : Geochemistry, Geophysics, Geosystems. Early View, 30 p.

    Research output: Contribution to journalArticle

  3. Evolving mantle sources in postcollisional early Permian-Triassic magmatic rocks in the heart of of Tianshan Orogen (western China)

    Tang, G-J., Cawood, P. A., Wyman, D. A., Wang, Q. & Zhao, Z-H., Nov 2017, In : Geochemistry, Geophysics, Geosystems. 18, 11, p. 4110-4122 13 p.

    Research output: Contribution to journalArticle

  4. Causes of unrest at silicic calderas in the East African Rift: new constraints from InSAR and soil-gas chemistry at Aluto volcano, Ethiopia

    Hutchison, W., Biggs, J., Mather, T. A., Pyle, D. M., Lewi, E., Yirgu, G., Caliro, S., Chiodini, G., Clor, L. E. & Fischer, T. P., Aug 2016, In : Geochemistry, Geophysics, Geosystems. 17, 8, p. 3008-3030

    Research output: Contribution to journalArticle

  5. Magnetic record of deglaciation using FORC-PCA, sortable-silt grain size, and magnetic excursion at 26 ka, from the Rockall Trough (NE Atlantic)

    Channell, J. E. T., Harrison, R. J., Lascu, I., McCave, I. N., Hibbert, F. D. & Austin, W. E. N., May 2016, In : Geochemistry, Geophysics, Geosystems. 17, 5, p. 1823-1841 19 p.

    Research output: Contribution to journalArticle

ID: 38883287