Zircon rock dating website

NS 218 831) and are part of a sequence from the Dunoon Phyllites in the Southern Highland Group.

zircon rock dating website-5zircon rock dating website-18zircon rock dating website-4

The SEM has an EDAX Pegasus 2000 energy-dispersive X-ray microanalyser (EDX) for qualitative element analysis.Electron probe microanalysis (EPMA) was conducted on a Cameca SX-50 at University of Glasgow and a Cameca SX-100 at University of Strathclyde.The former was used to analyse the host zircon and outgrowths and the latter for dark BSE zircon.The setup conditions for both were 20 k V and 20 n A with a 30 s count time on peaks.The detection limits based on background counting statistics for EPMA are: Mg 100 ppm, Al 100 ppm, Si 150 ppm, Ca 70 ppm, Fe 300 ppm, Y 300 ppm, Hf 1000 ppm and Zr 500 ppm.

Leave a Reply