Le Zhang

Dual Nd isotopic archives in fossil teeth reveal bottom-current control of rare-earth element enrichment in deep-sea sediments

The global emergence of deep-sea sediments enriched in rare-earth elements and yttrium (REY) after the Late Eocene cooling coincides spatiotemporally with Antarctic bottom water (AABW) expansion, yet the underlying mechanism remains unresolved. Here, we present in situ elemental...

Heavy boron isotopes reveal deep carbon recycling in hot subduction zones

Abstract The efficiency of deep carbon recycling in hot subduction systems remains debated, with contrasting models predicting either extensive shallow decarbonation or substantial carbonate retention within the subducted slab. Here we present boron-isotope and geochemical data f...