Pb diffusion in zircon

By D. Cherniak, E. B. Watson. 2001

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Past, Present, and Future of Thermochronology (2005, background): “…work on accessory phases is seeing increasing use owing to the greater number of ion probes now available for radioisotopic dating, as well as advances in understanding of Pb diffusion (e.g., Cherniak 1993; Cherniak and Watson 2001) and closure profi les within minerals (Harrison et al. 2005).”
Maximum depositional age estimation revisited (2020, background): “Suppose that 100% of the grains in a sample are concordant and syn-depositional at 10 Ma, with normally distributed uncertainties of 1 Ma at 1σ. The solution to this toy example is trivial. The depositional age is simply given by the mean of all the dates. Yet six of the nine MDA estimation algorith”
Diffusion in Minerals and Melts: Theoretical Background (2010, background): “The Pb closure temperature in 60-μm zircon is about 1200 K (Cherniak and Watson 2000), higher than the placement temperature of about 1050 K (Harrison and McDougall 1980).”
Ti-in-zircon thermometry: applications and limitations (2008, background): “There are two possible explanations: (1) the similar temperatures of core and rim could be explained if Ti exchanged during metamorphism; however, the likely slow diffusion of Ti in zircon (Watson et al. 2006; Cherniak and Watson 2007 ) suggests a closure temperature above 900C.”