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Lu hf garnet dating usa

Lu hf garnet dating usa

Garnet Lu-Hf and SmNd dating provide powerful alternatives. Garnet Lu-Hf dates are often older than SmNd dates. Garnet and zircon dates are typically dissimilar, even when REE signatures could suggest garnet-zircon equilibrium. The ability of garnet and zircon to record and retain complementary age information demonstrates the power of their combined use.

We find that the Lu/Hf ratio of garnet is particularly high, which helps to U–Pb dating of zircons gives, in principle, reliable crystallization ages. Selected samples have ~mm‐sized garnet grains that have been sampled with a micro‐drill and analysed for dating. The Lu–Hf dates of bulk.

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