Presently, combined studies of Lu-Hf and U-Pd data of zircon is used, why there is a need to combine both the data for interpretation of Early crustal evolution.
Hi Chandra,
Two, geochemically independent, isotope systems are required; one to provide a reliable geochronometer (e.g. U-Pb) and one to indicate the degree of departure (and hence crustal differentiation) from the mantle evolution line (e.g Lu-Hf or Nd-Sm) at the time of crystallization given by the geochronometer.
I suggest you take a look at Scherer et. al. (2007), who provide a very accessible account of the particular merits of accessory and detrital zircon in crustal studies, and explain why the application of coupled U-Pb Lu-Hf analysis in zircon is now pre-eminent in studies of crustal evolution.
Best regards
Graham
Scherer, Erik E., Martin J. Whitehouse, and Carsten Münker. "Zircon as a monitor of crustal growth." Elements 3.1 (2007): 19-24
Sir,
Thank you for the response and i found it very useful, well i am very much interested to know more about the complexities involve in both the independent isotope systems and how to minimize the same while interpreting the results of the analysis.
Thank you for the suggested article,
Regards
Chandra Bhushan
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