radiogenic dating; stable isotopes; radiogenic isotopes; igneous and metamorphic petrology; sedimentology and palaeontology
Decraene Marie‐Noëlle, Marin‐Carbonne Johanna, Bouvier Anne‐Sophie, Villeneuve Johan, Bouden Nordine, Luais Béatrice, Deloule Etienne (2021), High‐spatial‐resolution measurements of iron isotopes in pyrites by secondary ion mass spectrometry using the new Hyperion‐II radio‐frequency plasma source, in Rapid Communications in Mass Spectrometry
, 35(3), 1-15.
Marger Katharina, Harlaux Matthieu, Rielli Andrea, Baumgartner Lukas P., Dini Andrea, Dutrow Barbara L., Bouvier Anne‐Sophie (2020), Development and Re‐Evaluation of Tourmaline Reference Materials for In Situ Measurement of Boron δ Values by Secondary Ion Mass Spectrometry, in Geostandards and Geoanalytical Research
, 44(3), 593-615.
Secondary Ion Mass Spectrometry (SIMS) is one of the most advanced micro-analytical methods in Earth and Material Sciences. It permits to analyze element and isotope concentrations in-situ with a spot resolution of a 10-20µm. This project requests funds for the acquisition of the new radio frequency (RF) Hyperion-II oxygen source for the existing SIMS. It will be mounted on the CAMECA IMS 1280HR hosted at the SwissSIMS laboratory, a national facility located at the University of Lausanne.The RF-Hyperion-II oxygen source offers improved stability and a very intense primary ion beam. The new capabilities of this source permits exciting new research in fields where high precision measurements of positive ions (rare earth elements, Ti, Si, etc) are required coupled with high spatial resolution. In the proposal we present 3 applications in greater detail to illustrate the analytical improvements that this new source will allow: (1) U, Th-Pb dating of zircon and monazite to constrain the timing of metamorphic reactions; (ii) stable Fe isotope on micron-sized biogenic pyrite to trace early life in the Archean; (iii) trace element and hydrogen analysis in quartz to understand the rheology of the crust and water-rock interaction. We expect the Swiss and international earth science community to fully profit from this project. Research projects for the SwissSIMS are screened twice a year by the scientific steering committee.