Skip to content

Research at St Andrews

The potential of ion microprobe analysis in detecting geochemical variations across individual foraminifera tests

Research output: Contribution to journalArticle

DOI

Abstract

[1] Trace element chemistry variations within individual foraminifera tests may provide valuable information on past ocean conditions. However, the combination of thin test walls and the presence of surface contaminants, not held within the carbonate structure, provide a stringent test to microanalytical methods. We analysed two tests of the benthic foraminifera Ammonia batavus by ion microprobe and compared two sets of analytical conditions. Using apertures to restrict the size of the analysed area (to ca. 10 m m diameter) reduced the effects of sample contamination. Sr concentrations were unaffected by any contamination encountered and Mg could be determined provided checks were made for silicate contamination using Al, Si and K intensities. Measured Sr concentrations (1.012-1.379 mmol mol(-1)) were in reasonable agreement with previously reported values. Mg concentrations (0.691-1.412 mmol mol(-1)) were significantly lower than values reported previously for calcitic benthic species. Significant variations in Sr concentrations occurred within individual test chambers and may reflect the juxtapositioning of calcite of different ages as the test is deposited. Significant variations in Mg and Sr concentrations also occurred between test chambers.

Close

Details

Original languageEnglish
Pages (from-to)8403
Number of pages9
JournalGeochemistry, Geophysics, Geosystems
Volume4
Issue number2
DOIs
Publication statusPublished - 27 Feb 2003

    Research areas

  • foraminifera, Sr, Mg, ion microprobe analysis, 1094 geochemistry : instruments and techniques, 4267 oceanography : general : paleoceanography, 3030, marine geology and geophysics : micropaleontology, MAGNESIUM, CALCITE, TRACE, SEA, STRONTIUM, ELEMENTS, CORALS, SR/CA, PROXY

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

View graph of relations

Related by author

  1. Serial Mg/Ca and Sr/Ca chronologies across single benthic foraminifera tests

    Allison, N. & Austin, W. E. N., 30 Jul 2008, In : Chemical Geology. 253, 1-2, p. 83-88 6 p.

    Research output: Contribution to journalArticle

  2. Marine bivalve feeding strategies and radiocarbon ages in Northeast Atlantic coastal waters

    Lo Giudice Cappelli, E. & Austin, W. E. N., 1 Jul 2019, In : Radiocarbon. First View, 19 p.

    Research output: Contribution to journalArticle

  3. The genetic diversity, morphology, biogeography, and taxonomic designations of Ammonia (Foraminifera) in the Northeast Atlantic

    Bird, C., Schweizer, M., Roberts, A., Austin, W. E. N., Knudsen, K. L., Evans, K. M., Filipsson, H. L., Sayer, M. D. J., Geslin, E. & Darling, K. F., 19 Feb 2019, In : Marine Micropaleontology.

    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. 20, 4, p. 1679-1697

    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. Pinpointing deep geothermal upflow in zones of complex tectono-volcanic degassing: new insights from Aluto volcano, Main Ethiopian Rift

    Jolie, E., Hutchison, W., Driba, D. L., Jentsch, A. & Gizaw, B., 17 Jul 2019, (Accepted/In press) In : Geochemistry, Geophysics, Geosystems. In press

    Research output: Contribution to journalArticle

  4. 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

  5. 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

ID: 762423