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  • Slama, Jiri (author)

Plesovice zircon : A new natural reference material for U-Pb and Hf isotopic microanalysis

  • Article/chapterEnglish2008

Publisher, publication year, extent ...

  • Elsevier BV,2008
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:su-58577
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-58577URI
  • https://doi.org/10.1016/j.chemgeo.2007.11.005DOI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • authorCount :14
  • Matrix-matched calibration by natural zircon standards and analysis of natural materials as a reference are the principle methods for achieving accurate results in inicrobeam U-Pb dating and Hf isotopic analysis. We describe a new potential zircon reference material for laser ablation ICP-MS that was extracted from a potassic granulite facies rock collected in the southern part of the Bohemian Massif (Plesovice, Czech Republic). Data from different techniques (ID-TIMS, SIMS and LA ICP-MS) and several laboratories suggest that this zircon has a concordant U-Pb age with a weighted mean Pb-206/U-238 date of 337.13 +/- 0.37 Ma (ID-TIMS, 95% confidence limits, including tracer calibration uncertainty) and U-Pb age homogeneity on the scale used in LA ICP-MS dating. Inhomogeneities in trace element composition due to primary growth zoning prevent its use as a calibration standard for trace element analysis. The content of U varies from 465 ppm in pristine parts of the grains to similar to 3000 ppm in actinide-rich sectors that correspond to pyramidal faces with a high degree of metamictization (present in ca. 30% of the grains). These domains are easily recognized from high intensities on BSE images and should be avoided during the analysis. Hf isotopic composition of the Plesovice zircon (>0.9 wt.% Hf) is homogenous within and between the grains with a mean Hf-176/Hf-177 value of 0.282492 +/- 0.000013 (2SD). The age and Hf isotopic homogeneity of the Plesovice zircon together with its relatively high U and Pb contents make it an ideal calibration and reference material for laser ablation ICP-MS measurements, especially when using low laser energies and/or small diameters of laser beam required for improved spatial resolution.

Subject headings and genre

  • zircon reference material
  • laser ablation ICP-MS
  • Plesovice
  • U-Pb dating
  • Hf isotopes
  • Bohemian Massif
  • NATURAL SCIENCES
  • NATURVETENSKAP

Added entries (persons, corporate bodies, meetings, titles ...)

  • Kosler, Jan (author)
  • Condon, Daniel J. (author)
  • Crowley, James L. (author)
  • Gerdes, Axel (author)
  • Hanchar, John M. (author)
  • Horstwood, Matthew S. A. (author)
  • Morris, George A.Stockholms universitet,Institutionen för geologi och geokemi (author)
  • Nasdala, Lutz (author)
  • Norberg, Nicholas (author)
  • Schaltegger, Urs (author)
  • Schoene, Blair (author)
  • Tubrett, Michael N. (author)
  • Whitehouse, Martin J. (author)
  • Stockholms universitetInstitutionen för geologi och geokemi (creator_code:org_t)

Related titles

  • In:Chemical Geology: Elsevier BV249:02-jan, s. 1-350009-25411872-6836

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