We have some laser ablation analyses of zircon (U-Pb and trace elements geochemistry) from calc-alkaline granite of tonalitic to dioritic composition without metamorphism. Accessories minerals in these rocks are epidote, sphene, apatite and zircon.
Watson et al., 2006 propose Ti content on Zircon as a thermometer. Normally titanium content from zircon is obtained by analysis in electron or ion microprobe.
Dear Mr. Tarazona Velasquez,
I used it the way you described it. But you should take a carefull look at the data and try and check both equations used by Watson et al. (2006) and that elaborated by Zack et al. (2004:
Zack, T., Moraes, R., Kronz, A., 2004. Temperature dependence of Zr in rutile: empirical calibration of a rutile thermometer. Contributions to Mineralogy and Petrology 148, 471-488.
Both are indirect measures based on trace elements only. I also used the zircon morohology / crystallography for cross-checking:
Pupin J.P. ,1980. Zircon and granite petrology. Contribution Mineralogy Petrology 73, 207-220.
Mucho exito y cordiales saludos
H.G.Dill
Leonid Shumlyanskyy and Harald G. Dill many thanks for your replies.
Yes, Strictly speaking, the Ti-in-zircon thermometer applies to systems containing rutile. You could use the Ti concentration to calculate the crystallization temperature, and if you want to obtain more information, you can compare Ti-in-Zircon temperature with the Zircon saturation temperature as decried by Watson, E. B. and T. M. Harrison (1983). "Zircon Saturation Revisited: Temperature and Composition Effects in a Variety of Crustal Magma Types." Earth and Planetary Science Letters 64(2): 295-304.
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