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Ulf Söderlund

Ulf Söderlund

Professor

Ulf Söderlund

Quadrupole LA-ICP-MS U/Pb geochronology of baddeleyite single crystals

Author

  • Cora C. Wohlgemuth-Ueberwasser
  • Ulf Söderlund
  • Victoria Pease
  • Mimmi Nilsson

Summary, in English

We present a straightforward method for accurate and precise U/Pb dating of baddeleyite using quadrupole LA-ICP-MS. To establish the validity of our ICP-MS data we used FC-4b baddeleyite from the Duluth complex as external standard, whereas baddeleyite from the Phalaborwa (South Africa) and the Sorkka (SW Finland) intrusions were treated as unknowns. The analytical protocol includes the use of a matrix matched standard, which allows for an accurate downhole-fractionation and laser-induced interelement fractionation correction. The quadrupole ICP-MS results for the Phalaborwa and Sorkka samples analyzed are accurate within error of the published ID-TIMS U/Pb ages and with a precision of 0.3-0.7% (2 sigma) from concordia ages of ten to twenty analyses per sample. No orientation effects were observed.

Department/s

  • Lithosphere and Biosphere Science

Publishing year

2015

Language

English

Pages

1191-1196

Publication/Series

Journal of Analytical Atomic Spectrometry

Volume

30

Issue

5

Document type

Journal article

Publisher

Royal Society of Chemistry

Topic

  • Geology

Status

Published

ISBN/ISSN/Other

  • ISSN: 1364-5544