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Combined oxygen-isotope and U-Pb zoning studies of titanite: New criteria for age preservation

Bonamici, Chloë E.; Fanning, C. Mark; Kozdon, Reinhard; Fournelle, John H.; Valley, John W.


Titanite is an important U-Pb chronometer for dating geologic events, but its high-temperature applicability depends upon its retention of radiogenic lead (Pb). Experimental data predict similar rates of diffusion for lead (Pb) and oxygen (O) in titanite at granulite-facies metamorphic conditions (T = 650-800 °C). This study therefore investigates the utility of O-isotope zoning as an indicator for U-Pb zoning in natural titanite samples from the Carthage-Colton Mylonite Zone of the Adirondack...[Show more]

CollectionsANU Research Publications
Date published: 2015-02-11
Type: Journal article
Source: Chemical Geology
DOI: 10.1016/j.chemgeo.2015.02.002


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