In situ measurements of calcium isotopes by ion microprobe in carbonates and application to foraminifera
International audience An analytical procedure has been developed for the in situ measurement of calcium isotope composition of carbonates with a spatial resolution of 15-20 μm on a Caméca IMS 1270 ion microprobe. By using two Faraday cup detectors, the 40 Ca and 44 Ca can be measured simultaneously...
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Online Access: | https://hal.science/hal-03130873 https://hal.science/hal-03130873/document https://hal.science/hal-03130873/file/spezzaferri_ism.pdf https://doi.org/10.1016/j.chemgeo.2007.07.021 |
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ftinsu:oai:HAL:hal-03130873v1 2024-02-11T10:08:04+01:00 In situ measurements of calcium isotopes by ion microprobe in carbonates and application to foraminifera Rollion-Bard, Claire Vigier, Nathalie Spezzaferri, Silvia Laboratoire d'océanographie de Villefranche (LOV) Observatoire océanologique de Villefranche-sur-mer (OOVM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Centre National de la Recherche Scientifique (CNRS) Sorbonne Université (SU) 2007-10 https://hal.science/hal-03130873 https://hal.science/hal-03130873/document https://hal.science/hal-03130873/file/spezzaferri_ism.pdf https://doi.org/10.1016/j.chemgeo.2007.07.021 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.chemgeo.2007.07.021 hal-03130873 https://hal.science/hal-03130873 https://hal.science/hal-03130873/document https://hal.science/hal-03130873/file/spezzaferri_ism.pdf doi:10.1016/j.chemgeo.2007.07.021 info:eu-repo/semantics/OpenAccess ISSN: 0009-2541 Chemical Geology https://hal.science/hal-03130873 Chemical Geology, 2007, 244 (3-4), pp.679-690. ⟨10.1016/j.chemgeo.2007.07.021⟩ Calcium isotopes Ion microprobe Calcite Foraminifera [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2007 ftinsu https://doi.org/10.1016/j.chemgeo.2007.07.021 2024-01-24T17:31:56Z International audience An analytical procedure has been developed for the in situ measurement of calcium isotope composition of carbonates with a spatial resolution of 15-20 μm on a Caméca IMS 1270 ion microprobe. By using two Faraday cup detectors, the 40 Ca and 44 Ca can be measured simultaneously, improving the internal reproducibility. Instrumental mass fractionation (IMF) of calcium isotopes was observed to be independent of primary ion beam intensity and of the Mg content of the carbonate, but can depend on vacuum conditions. Three calcite reference materials were used in this study (ENS 0, MEX and BRET 105E) and their δ 44 Ca values relative to NIST915a were reproducible within a typical 1σ standard deviation of ≈0.15‰. This analytical procedure was applied to planktonic foraminifera, Globorotalia inflata, dated at 2.8 Ma from Shatsky Rise (ODP leg 198). The range of measured δ 44 Ca within a single test is 1.7‰. This intratest variation can be attributed to several processes such as temperature variation, ontogenic effects or differences between primary and secondary calcite (i.e. calcite precipitated by different biomineralization processes). Despite this intratest variation, the averages δ 44 Ca for each foraminifer are similar and are in agreement with published δ 44 Ca values measured for this age. This study shows that in situ δ 44 Ca measurements in tests of foraminifera are an appropriate tool for investigating biomineralization processes. Article in Journal/Newspaper Planktonic foraminifera Institut national des sciences de l'Univers: HAL-INSU Faraday ENVELOPE(-64.256,-64.256,-65.246,-65.246) Chemical Geology 244 3-4 679 690 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
Calcium isotopes Ion microprobe Calcite Foraminifera [SDU]Sciences of the Universe [physics] |
spellingShingle |
Calcium isotopes Ion microprobe Calcite Foraminifera [SDU]Sciences of the Universe [physics] Rollion-Bard, Claire Vigier, Nathalie Spezzaferri, Silvia In situ measurements of calcium isotopes by ion microprobe in carbonates and application to foraminifera |
topic_facet |
Calcium isotopes Ion microprobe Calcite Foraminifera [SDU]Sciences of the Universe [physics] |
description |
International audience An analytical procedure has been developed for the in situ measurement of calcium isotope composition of carbonates with a spatial resolution of 15-20 μm on a Caméca IMS 1270 ion microprobe. By using two Faraday cup detectors, the 40 Ca and 44 Ca can be measured simultaneously, improving the internal reproducibility. Instrumental mass fractionation (IMF) of calcium isotopes was observed to be independent of primary ion beam intensity and of the Mg content of the carbonate, but can depend on vacuum conditions. Three calcite reference materials were used in this study (ENS 0, MEX and BRET 105E) and their δ 44 Ca values relative to NIST915a were reproducible within a typical 1σ standard deviation of ≈0.15‰. This analytical procedure was applied to planktonic foraminifera, Globorotalia inflata, dated at 2.8 Ma from Shatsky Rise (ODP leg 198). The range of measured δ 44 Ca within a single test is 1.7‰. This intratest variation can be attributed to several processes such as temperature variation, ontogenic effects or differences between primary and secondary calcite (i.e. calcite precipitated by different biomineralization processes). Despite this intratest variation, the averages δ 44 Ca for each foraminifer are similar and are in agreement with published δ 44 Ca values measured for this age. This study shows that in situ δ 44 Ca measurements in tests of foraminifera are an appropriate tool for investigating biomineralization processes. |
author2 |
Laboratoire d'océanographie de Villefranche (LOV) Observatoire océanologique de Villefranche-sur-mer (OOVM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Centre National de la Recherche Scientifique (CNRS) Sorbonne Université (SU) |
format |
Article in Journal/Newspaper |
author |
Rollion-Bard, Claire Vigier, Nathalie Spezzaferri, Silvia |
author_facet |
Rollion-Bard, Claire Vigier, Nathalie Spezzaferri, Silvia |
author_sort |
Rollion-Bard, Claire |
title |
In situ measurements of calcium isotopes by ion microprobe in carbonates and application to foraminifera |
title_short |
In situ measurements of calcium isotopes by ion microprobe in carbonates and application to foraminifera |
title_full |
In situ measurements of calcium isotopes by ion microprobe in carbonates and application to foraminifera |
title_fullStr |
In situ measurements of calcium isotopes by ion microprobe in carbonates and application to foraminifera |
title_full_unstemmed |
In situ measurements of calcium isotopes by ion microprobe in carbonates and application to foraminifera |
title_sort |
in situ measurements of calcium isotopes by ion microprobe in carbonates and application to foraminifera |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-03130873 https://hal.science/hal-03130873/document https://hal.science/hal-03130873/file/spezzaferri_ism.pdf https://doi.org/10.1016/j.chemgeo.2007.07.021 |
long_lat |
ENVELOPE(-64.256,-64.256,-65.246,-65.246) |
geographic |
Faraday |
geographic_facet |
Faraday |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
ISSN: 0009-2541 Chemical Geology https://hal.science/hal-03130873 Chemical Geology, 2007, 244 (3-4), pp.679-690. ⟨10.1016/j.chemgeo.2007.07.021⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.chemgeo.2007.07.021 hal-03130873 https://hal.science/hal-03130873 https://hal.science/hal-03130873/document https://hal.science/hal-03130873/file/spezzaferri_ism.pdf doi:10.1016/j.chemgeo.2007.07.021 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.chemgeo.2007.07.021 |
container_title |
Chemical Geology |
container_volume |
244 |
container_issue |
3-4 |
container_start_page |
679 |
op_container_end_page |
690 |
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1790607016046100480 |