Upb dating

The investigation of accessory zircon has become a primary tool of petrogenetic studies.

Not only can zircons survive erosion and crustal melting and thus store information on the protolith, but zoned zircon crystals can also record discrete stages of growth that can be correlated with geological events.

This allows dating of a wide variety of rocks (e.g., volcanic, magmatic, metamorphic, sedimentary and hydrothermal environments) without the need of preconcentration, as is often required for U-Pb dating of zircon.

Characterisation includes ID-TIMS and LA-ICP-MS UPb dating, imaging, and trace element analysis.Therefore, one can assume that the entire lead content of the zircon is radiogenic, i.e.it is produced solely by a process of radioactive decay after the formation of the mineral.Crystal fractionation and restite unmixing from this crystal mush, together with differential partial melting, were the principal magmamodifying mechanisms during the generation of the Bohus granite massif.ABSTRACT: The Rb-Sr beta-decay dating system is one of the most attractive tools in geochronology, as Rb is sufficiently abundant in common K-bearing minerals like biotite, muscovite and K-feldspar.

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