2023
DOI: 10.1029/2022jb025348
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Highly Unradiogenic Pb Isotopes Revealed by Plagioclase‐Hosted Melt Inclusions in E‐MORB From the South China Sea

Abstract: Mid‐ocean ridge basalts (MORBs) can record heterogeneity of the upper mantle. Early crystallized minerals and their melt inclusions commonly record greater isotopic variability than whole‐rocks and are powerful tools to investigate the mantle source. In this study, we develop a new in situ Pb analytical protocol for Pb‐poor materials (sub‐ppm level) and apply it to the plagioclase‐hosted melt‐inclusions from IODP Expedition 349 Site U1433, South China Sea (SCS). Together with element mapping, in situ major and… Show more

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