Data Publication

Laser ablation Mn/Ca ratios of single foraminiferal shells from the Gulf of Lions

4TU.Centre for Research Data

(2018)

Descriptions

Foraminiferal trace element concentrations were determined using two laser ablation ICP-MS systems. Prior to laser ablation, all samples were gently cleaned in methanol (x1) and UHQ water (x4). Between each rinse, the samples were placed in a sonic bath for several seconds to thoroughly clean the tests. Benthic foraminifera from 745m (station D), 980m (station C), 1488m (station B), and 1987m (station A) were measured at Utrecht University using a deep UV (193 nm) ArF excimer laser (Lambda Physik) with GeoLas 200Q optics. Ablation was performed at a pulse repetition rate of 10 Hz and an energy density of 1.4 J/cm², with a crater size of 80 μm. Ablated particles were measured by a quadrupole ICP-MS (Micromass Platform) equipped with a collision and reaction cell. Such a collision and reaction cell improves carbonate analyses by eliminating interferences on mass 44. Scanned masses included 24Mg, 26Mg, 27Al, 42Ca, 43Ca, 55Mn, 88Sr, 137Ba, 138Ba, and 208Pb. Benthic foraminifera from stations F (350 m) and E (552 m) were analyzed at ETH Zurich (due to laboratory renovations at Utrecht University). The laser type and ablation parameters were identical to those detailed above. The ablated particles were measured using a quadrupole ICP-MS (ELAN 6100 DRC, PerkinElmer). In both cases, calibration was performed using an international standard (NIST610) with Ca as an internal standard (Jochum et al., 2011). The same masses as measured in Utrecht were monitored, in addition to 7Li, 23Na, 47Ti, 60Ni, 61Ni, and 89Y. Interlaboratory compatibility was monitored using a matrix-matched calcite standard. For Mn, reported here, this standard showed a precision better than 3%over all analyses, at ETH and UU, and with an offset of less than 5%from an offline-determined (solution ICP-AES) concentration analyzing discrete subsamples. The matrix-matched standard is routinely included in the analyses and has been monitored since 2010 at Utrecht University. Analytical error (equivalent to 1 sigma), based on repeated measurement of an external standard, was < 5% for reported elements. Each laser ablation measurement was screened for contamination by monitoring Al and Pb. On encountering surface contamination, the data integration interval was adjusted to exclude any Al or Pb enrichment. Cross-plots between Al and Pb versus Mn showed that they are unrelated, confirming the accuracy of the integrations.

Keywords

Originally assigned keywords

Geochemistry

FOS: Earth and related environmental sciences

Foraminiferal trace elements

Time: 2006/2010

MSL enriched keywords

minerals

carbonate minerals

calcite

equipment

atomic emission spectrometer

inductively coupled plasma-atomic emission spectrometer

mass spectrometer

inductively coupled plasma-mass spectrometer

measured property

manganese

MSL enriched sub domains i

geochemistry

Source

https://data.4tu.nl/articles/_/12708938/1

Source publisher

4TU.Centre for Research Data

DOI

10.4121/uuid:9f44c16a-ccc1-4bef-8e98-d01320797271

Creators

Reichart, Gert-Jan

Ní Fhlaithearta, S. (Shauna)

https://orcid.org/:

0000-0002-0101-8937

Fontanier, C. (Christophe)

Jorissen, F. (Frans)

Mouret, A. (Aurélia)

Dueñas-Bohórquez, A. (Adriana)

Anschutz, P. (Pierre)

Fricker, M.B. (Mattias)

Günther, D. (Detlef)

de Lange, G.J. (Gert)

Contributors

NIOZ Royal Netherlands Institute For Sea Research, Department Of Ocean Systems, And Utrecht University

Other

References

https://doi.org/10.5194/bg-15-6315-2018

Citation

Reichart, G.-J., Ní Fhlaithearta, S. (S., Fontanier, C. (C., Jorissen, F. (F., Mouret, A. (A., Dueñas-Bohórquez, A. (A., Anschutz, P. (P., Fricker, M. B. (M., Günther, D. (D., & de Lange, G. J. (G. (2018). Laser ablation Mn/Ca ratios of single foraminiferal shells from the Gulf of Lions (Version 1) [Data set]. 4TU.Centre for Research Data. https://doi.org/10.4121/UUID:9F44C16A-CCC1-4BEF-8E98-D01320797271

Dates

Issued:

2018-10-19

Language

en

Rights

Creative Commons Zero v1.0 Universal

Datacite version

1

Geo location(s)

Gulf of Lion