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

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The potential of ion microprobe analysis in detecting geochemical variations across individual foraminifera tests. / Allison, N ; Austin, W E N .

In: Geochemistry, Geophysics, Geosystems, Vol. 4, No. 2, 27.02.2003, p. 8403.

Research output: Contribution to journalArticle

Harvard

Allison, N & Austin, WEN 2003, 'The potential of ion microprobe analysis in detecting geochemical variations across individual foraminifera tests' Geochemistry, Geophysics, Geosystems, vol. 4, no. 2, pp. 8403. https://doi.org/10.1029/2002GC000430

APA

Allison, N., & Austin, W. E. N. (2003). The potential of ion microprobe analysis in detecting geochemical variations across individual foraminifera tests. Geochemistry, Geophysics, Geosystems, 4(2), 8403. https://doi.org/10.1029/2002GC000430

Vancouver

Allison N, Austin WEN. The potential of ion microprobe analysis in detecting geochemical variations across individual foraminifera tests. Geochemistry, Geophysics, Geosystems. 2003 Feb 27;4(2):8403. https://doi.org/10.1029/2002GC000430

Author

Allison, N ; Austin, W E N . / The potential of ion microprobe analysis in detecting geochemical variations across individual foraminifera tests. In: Geochemistry, Geophysics, Geosystems. 2003 ; Vol. 4, No. 2. pp. 8403.

Bibtex - Download

@article{b8f9a2d929654afb8d12b96ee1919aec,
title = "The potential of ion microprobe analysis in detecting geochemical variations across individual foraminifera tests",
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.",
keywords = "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",
author = "N Allison and Austin, {W E N}",
year = "2003",
month = "2",
day = "27",
doi = "10.1029/2002GC000430",
language = "English",
volume = "4",
pages = "8403",
journal = "Geochemistry, Geophysics, Geosystems",
issn = "1525-2027",
publisher = "John Wiley & Sons, Ltd.",
number = "2",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - The potential of ion microprobe analysis in detecting geochemical variations across individual foraminifera tests

AU - Allison, N

AU - Austin, W E N

PY - 2003/2/27

Y1 - 2003/2/27

N2 - [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.

AB - [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.

KW - foraminifera

KW - Sr

KW - Mg

KW - ion microprobe analysis

KW - 1094 geochemistry : instruments and techniques

KW - 4267 oceanography : general : paleoceanography

KW - 3030

KW - marine geology and geophysics : micropaleontology

KW - MAGNESIUM

KW - CALCITE

KW - TRACE

KW - SEA

KW - STRONTIUM

KW - ELEMENTS

KW - CORALS

KW - SR/CA

KW - PROXY

UR - http://www.scopus.com/inward/record.url?scp=28444450462&partnerID=8YFLogxK

U2 - 10.1029/2002GC000430

DO - 10.1029/2002GC000430

M3 - Article

VL - 4

SP - 8403

JO - Geochemistry, Geophysics, Geosystems

T2 - Geochemistry, Geophysics, Geosystems

JF - Geochemistry, Geophysics, Geosystems

SN - 1525-2027

IS - 2

ER -

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ID: 762423