Non-matrix-matched analysis with allanite and zircon: In situ U-Th-Pb age determination and trace-element constraints on Cretaceous granite genesis in the North Taihang Orogen

Allanite is a REE-rich accessory mineral commonly enriched in Th and U and is therefore well suited to U-Th-Pb geochronology.However, widely used international allanite reference materials (RMs) typically contain common Pb and are not readily accessible.Zircon RMs are robust and available, and have been applied to allanite age determination via non-matrix-matched LA-ICP-MS calibration, but their performance requires further evaluation.In this study, we date magmatic allanite from two Cretaceous granite plutons (Wanganzhen,