Geochronological studies reveal garnet age in the Aldan Shield, suggesting its use for age estimates of alkaline rocks.
The results of U‒Pb geochronological studies of calcium garnet from nepheline syenites of the Yakokutsky volcano-plutonic complex (the Aldan Shield) are presented. The garnet age is 131 ± 1 Ma and is consistent with the previously obtained age estimates for garnet from kalsilitic ijolites and pyroxene-microcline pegmatites of the Murunsky massif. The results of these studies demonstrate the potential of garnet for reference age estimates of high-K alkaline rocks.
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Salnikova et al. (2026) studied this question.
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