Improving consistency in laser ablation geochronology

Matt Horstwood, George E Gehrels, James Bowring

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Workshop on Data Handling in LA-ICP-MS U-Th-Pb Geochronology; San Francisco, California, 12-13 December 2009; The use of uranium-thorium-lead (U-Th-Pb) laser ablation-inductively coupled plasma mass spectrometry (LA-ICP-MS) geochronology involves rapid analysis of U-and Th-rich accessory minerals. It routinely achieves 1-2% precision for U-Th-Pb dates constituting detrital mineral age spectra and for dating igneous and metamorphic events. The speed and low setup and analysis cost of LA-ICP-MS U-Th-Pb geochronology has led to a proliferation of active laboratories. Tens of thousands of analyses are produced per month, but there is little agreement on how to transform these data into accurate U-Th-Pb dates. Recent interlaboratory blind comparisons of zircon samples indicate that resolvable biases exist among laboratories and the sources of bias are not fully understood. Common protocols of data reduction and reporting are essential for scientists to be able to compare and interpret these data accurately.

Original languageEnglish (US)
Pages (from-to)247
Number of pages1
JournalEos
Volume91
Issue number28
DOIs
StatePublished - 2010

Fingerprint

ablation
geochronology
laser
mass spectrometry
plasma
interlaboratory comparison
cost analysis
accessory mineral
thorium
uranium
zircon
transform
mineral
laboratory

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

Cite this

Improving consistency in laser ablation geochronology. / Horstwood, Matt; Gehrels, George E; Bowring, James.

In: Eos, Vol. 91, No. 28, 2010, p. 247.

Research output: Contribution to journalArticle

Horstwood, Matt ; Gehrels, George E ; Bowring, James. / Improving consistency in laser ablation geochronology. In: Eos. 2010 ; Vol. 91, No. 28. pp. 247.
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