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Acquisition of a new thermal ionization mass spectrometer

English title Acquisition of a new thermal ionization mass spectrometer
Applicant Schaltegger Urs
Number 109491
Funding scheme Project funding
Research institution Département des sciences de la Terre Université de Genève
Institution of higher education University of Geneva - GE
Main discipline Other disciplines of Earth Sciences
Start/End 01.10.2005 - 31.03.2007
Approved amount 425'000.00
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Keywords (3)

isotope geochemistry; geochronology; thermal ionization mass spectrometer

Lay Summary (English)

Lay summary
The new center for geochronology at the University of Geneva needed to purchase a new thermal ionization mass spectrometer of the last generation. This new instrument offers on one hand new analytical options not available on our old MAT262 mass spectrometer, and on the other hand higher precision in both multicollection mode and single-collector, ion-counting mode. The decision was taken for a Triton from Thermo Fisher Scientific (Bremen). The current research is focussed on Sr, Nd, Pb tracing of magmatic rocks, as well as high-precision U-Pb dating of smallest amounts of zircon, using the new, linear, discrete-dynode MasCom electron multiplier in ion pulse counting mode. This equipment can yield 206Pb/238U ages with sub-permil precisions, needed for the precise and quantitative investigation of geological and biotic events in the histrory of the Earth.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Associated projects

Number Title Start Funding scheme
126500 Precise and accurate dating of periods of biotic crisis and recovery in the Earth's history using zircon U-Pb dating of volcanic ash beds. 01.12.2009 Project funding