Lithium distribution and isotopic composition in zircon megacrysts as constraints for their mantle origin and volcanic transfer timescales

Ban‐1 Zircon: A New Natural Zircon Reference Material for LA‐MC‐ICP‐MS Zr and Hf Isotopic Determinations

“…Zircon megacrysts are commonly found in the alluvial deposits associated with weathering of these Cenozoic rocks and are characterised by a very young age (0.98 Ma; Cong et al 2016, Zeug et al 2018. Previous studies suggested that these zircon megacrysts were initially derived from partial melting of a metasomatised lithospheric mantle source altered by carbonatite fluids (Li and Schmitt 2021) or phosphate-rich fluids and silicate melts (Cong et al 2016).…”

“…2018). Previous studies suggested that these zircon megacrysts were initially derived from partial melting of a metasomatised lithospheric mantle source altered by carbonatite fluids (Li and Schmitt 2021) or phosphate‐rich fluids and silicate melts (Cong et al . 2016).…”

“…As a stable accessory mineral common in most rock records, zircon has been widely used as a geochronological (in situ U-Pb dating) and geochemical fingerprint (in situ Li-O-Si-Zr-Hf-isotope determination) to determine the history of magmatism and the nature of magmatic source regions, and the petrogenesis of host rocks (Belousova et al 2002, Jackson et al 2004, Kemp et al 2007, Guitreau et al 2020, Inglis et al 2019, Li and Schmitt, 2021, Finch et al 2021. Compared with other in situ radiogenic (Lu-Hf) and stable (Li-O-Si) isotopic determinations, the in situ measurement for stable Zr isotopes is a newly developed method critical to trace magmatic processes and continental evolution (Inglis et al 2019, Ibañez-Mejia and Tissot 2019, Guo et al 2020, Tian et al 2021.…”