Geochronology
Geochronology
GChron
Articles | Volume 3, issue 1
Articles | Volume 3, issue 1
https://doi.org/10.5194/gchron-3-351-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-3-351-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 3, issue 1
Short communication/technical note
 | 
01 Jun 2021
Short communication/technical note |  | 01 Jun 2021

Technical note: Analytical protocols and performance for apatite and zircon (U–Th) ∕ He analysis on quadrupole and magnetic sector mass spectrometer systems between 2007 and 2020

Cécile Gautheron, Rosella Pinna-Jamme, Alexis Derycke, Floriane Ahadi, Caroline Sanchez, Frédéric Haurine, Gael Monvoisin, Damien Barbosa, Guillaume Delpech, Joseph Maltese, Philippe Sarda, and Laurent Tassan-Got

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Cited articles

Allard, T., Gautheron, C., Bressan-Riffel, S., Balan, E., Selo, M., Fernandes, B. S., Pinna-Jamme, R., Derycke, A., Morin, G., Taitson Bueno, G., and Do Nascimento, N. R.: Combined dating of goethites and kaolinites from ferruginous duricrusts. Deciphering the Late Neogene erosion history of Central Amazonia, Chem. Geol., 479, 136–150, https://doi.org/10.1016/j.chemgeo.2018.01.004, 2018. 
Ault, A. K., Gautheron, C., and King, G. E.: Innovations in (U–Th) / He, fission‐track, and trapped‐charge thermochronometry with applications to earthquakes, weathering, surface‐mantle connections, and the growth and decay of mountains, Tectonics, 38, 3705–3739, https://doi.org/10.1029/2018TC005312, 2019. 
Brown, R. W., Beucher, R., Roper, S., Persano, C., Stuart, F., and Fitzgerald, P.: Natural age dispersion arising from the analysis of broken crystals, Part I. Theoretical basis and implications for the apatite (U-Th) / He thermochronometer, Geochim. Cosmochim. Acta, 122, 478–497, https://doi.org/10.1016/j.gca.2013.05.041, 2013. 
Burnard, P. G. and Farley, K. A.: Calibration of pressure-dependent sensitivity and discrimination in Nier-type noble gas ion sources, Geochem. Geophy. Geosy., 1, 1022, https://doi.org/10.1029/2000GC000038, 2000. 
Cooperdock, E. H. G., Ketcham, R. A., and Stockli, D. F.: Resolving the effects of 2-D versus 3-D grain measurements on apatite (U–Th) / He age data and reproducibility, Geochronology, 1, 17–41, https://doi.org/10.5194/gchron-1-17-2019, 2019. 
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Short summary
Apatite and zircon (U–Th) / He thermochronology is now a mainstream tool to reconstruct Earth's evolution through the history of cooling and exhumation over the first dozen kilometers. The geological implications of these data rely on the precision of measurements of He, U, Th, and Sm contents in crystals. This technical note documents the methods for He thermochronology developed at the GEOPS laboratory, Paris-Saclay University, that allow (U–Th) / He data to be obtained with precision.
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