Single chamber Mg/Ca analyses of Globigerinoides ruber for paleo-proxy calibration using femtosecond LA-ICP-MS

Alexa Fischer; Ralf Schiebel; Klaus Peter Jochum; Lena Heins; Anthea I. Arns; Hedy M. Aardema; Hans Slagter; Maria Ll Calleja; Noy Levy; Brigitte Stoll; David Walter; Ulrike Weis; Janne Repschläger; Gerald H. Haug

doi:10.1038/s41597-024-03402-0

Single chamber Mg/Ca analyses of Globigerinoides ruber for paleo-proxy calibration using femtosecond LA-ICP-MS

Alexa Fischer
, Ralf Schiebel^*
, Klaus Peter Jochum
, Lena Heins
, Anthea I. Arns
, Hedy M. Aardema
, Hans Slagter
, Maria Ll Calleja
, Noy Levy
, Brigitte Stoll
, David Walter
, Ulrike Weis
, Janne Repschläger
, Gerald H. Haug

^*Corresponding author for this work

Fredy & Nadine Herrmann Institute of Earth Sciences

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Mg/Ca is an independent proxy in paleoceanography to reconstruct past seawater temperature. Femtosecond Laser Ablation Inductively Coupled Plasma Mass Spectrometry (fs-LA-ICP-MS) was employed to determine the Mg/Ca composition of tests (shells) of the planktic foraminifer species Globigerinoides ruber albus (white chromotype) and G. ruber ruber (red/pink chromotype) sampled alive from the temperate to subtropical eastern North Atlantic with the research sailing yacht Eugen Seibold. Mg/Ca data are compared to (i) the measured in-situ temperature of ambient seawater, (ii) average mixed layer temperature, and (iii) sea surface temperature (SST). The pooled mean chamber Mg/Ca from each plankton tow site exhibits a positive relationship with SST. Two chamber-specific calibrations are derived, which are consistent with previous calibration equations for comparable paleo-archives. The results confirm fs-LA-ICP-MS as reliable method for determining Mg/Ca in G. ruber, and both the penultimate and antepenultimate chambers of adult specimens may provide comprehensible Mg/Ca temperatures of the surface ocean.

Original language	English
Article number	583
Journal	Scientific data
Volume	11
Issue number	1
DOIs	https://doi.org/10.1038/s41597-024-03402-0
State	Published - Dec 2024

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Publisher Copyright:
© The Author(s) 2024.

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10.1038/s41597-024-03402-0

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Fischer, A., Schiebel, R., Jochum, K. P., Heins, L., Arns, A. I., Aardema, H. M., Slagter, H., Calleja, M. L., Levy, N., Stoll, B., Walter, D., Weis, U., Repschläger, J., & Haug, G. H. (2024). Single chamber Mg/Ca analyses of Globigerinoides ruber for paleo-proxy calibration using femtosecond LA-ICP-MS. Scientific data, 11(1), Article 583. https://doi.org/10.1038/s41597-024-03402-0

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title = "Single chamber Mg/Ca analyses of Globigerinoides ruber for paleo-proxy calibration using femtosecond LA-ICP-MS",

abstract = "Mg/Ca is an independent proxy in paleoceanography to reconstruct past seawater temperature. Femtosecond Laser Ablation Inductively Coupled Plasma Mass Spectrometry (fs-LA-ICP-MS) was employed to determine the Mg/Ca composition of tests (shells) of the planktic foraminifer species Globigerinoides ruber albus (white chromotype) and G. ruber ruber (red/pink chromotype) sampled alive from the temperate to subtropical eastern North Atlantic with the research sailing yacht Eugen Seibold. Mg/Ca data are compared to (i) the measured in-situ temperature of ambient seawater, (ii) average mixed layer temperature, and (iii) sea surface temperature (SST). The pooled mean chamber Mg/Ca from each plankton tow site exhibits a positive relationship with SST. Two chamber-specific calibrations are derived, which are consistent with previous calibration equations for comparable paleo-archives. The results confirm fs-LA-ICP-MS as reliable method for determining Mg/Ca in G. ruber, and both the penultimate and antepenultimate chambers of adult specimens may provide comprehensible Mg/Ca temperatures of the surface ocean.",

author = "Alexa Fischer and Ralf Schiebel and Jochum, \{Klaus Peter\} and Lena Heins and Arns, \{Anthea I.\} and Aardema, \{Hedy M.\} and Hans Slagter and Calleja, \{Maria Ll\} and Noy Levy and Brigitte Stoll and David Walter and Ulrike Weis and Janne Repschl{\"a}ger and Haug, \{Gerald H.\}",

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doi = "10.1038/s41597-024-03402-0",

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AU - Fischer, Alexa

AU - Schiebel, Ralf

AU - Jochum, Klaus Peter

AU - Heins, Lena

AU - Arns, Anthea I.

AU - Aardema, Hedy M.

AU - Slagter, Hans

AU - Calleja, Maria Ll

AU - Levy, Noy

AU - Stoll, Brigitte

AU - Walter, David

AU - Weis, Ulrike

AU - Repschläger, Janne

AU - Haug, Gerald H.

PY - 2024/12

Y1 - 2024/12

N2 - Mg/Ca is an independent proxy in paleoceanography to reconstruct past seawater temperature. Femtosecond Laser Ablation Inductively Coupled Plasma Mass Spectrometry (fs-LA-ICP-MS) was employed to determine the Mg/Ca composition of tests (shells) of the planktic foraminifer species Globigerinoides ruber albus (white chromotype) and G. ruber ruber (red/pink chromotype) sampled alive from the temperate to subtropical eastern North Atlantic with the research sailing yacht Eugen Seibold. Mg/Ca data are compared to (i) the measured in-situ temperature of ambient seawater, (ii) average mixed layer temperature, and (iii) sea surface temperature (SST). The pooled mean chamber Mg/Ca from each plankton tow site exhibits a positive relationship with SST. Two chamber-specific calibrations are derived, which are consistent with previous calibration equations for comparable paleo-archives. The results confirm fs-LA-ICP-MS as reliable method for determining Mg/Ca in G. ruber, and both the penultimate and antepenultimate chambers of adult specimens may provide comprehensible Mg/Ca temperatures of the surface ocean.

AB - Mg/Ca is an independent proxy in paleoceanography to reconstruct past seawater temperature. Femtosecond Laser Ablation Inductively Coupled Plasma Mass Spectrometry (fs-LA-ICP-MS) was employed to determine the Mg/Ca composition of tests (shells) of the planktic foraminifer species Globigerinoides ruber albus (white chromotype) and G. ruber ruber (red/pink chromotype) sampled alive from the temperate to subtropical eastern North Atlantic with the research sailing yacht Eugen Seibold. Mg/Ca data are compared to (i) the measured in-situ temperature of ambient seawater, (ii) average mixed layer temperature, and (iii) sea surface temperature (SST). The pooled mean chamber Mg/Ca from each plankton tow site exhibits a positive relationship with SST. Two chamber-specific calibrations are derived, which are consistent with previous calibration equations for comparable paleo-archives. The results confirm fs-LA-ICP-MS as reliable method for determining Mg/Ca in G. ruber, and both the penultimate and antepenultimate chambers of adult specimens may provide comprehensible Mg/Ca temperatures of the surface ocean.

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Single chamber Mg/Ca analyses of Globigerinoides ruber for paleo-proxy calibration using femtosecond LA-ICP-MS

Abstract

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