Identification and elimination of a matrix-induced systematic error in LA-ICP-MS 206pB/238u dating of zircon
Link references in abstract. Black et al. (2004) identified a systematic difference between LA-ICP-MS and TIMS measurements of 206Pb/ 238U in zircons, which they correlated with the incompatible trace element content of the zircon. We show that the offset between the LA-ICP-MS and TIMS measured 206Pb/ 238U correlates more strongly with the total radiogenic Pb than with any incompatible trace element. This suggests that the cause of the 206Pb/ 238U offset is related to differences in the...[Show more]
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