The Ce isotopic composition of the upper continental crust constraints from loess and granites

Stable isotopic composition of Cerium (Ce), a refractory, incompatible, and redox-sensitive element, provides a powerful tracer for continental weathering processes. However, the average δ 142/140 Ce value of the upper continental crust (UCC) remains poorly constrained. Here, we report Ce isotopic data of characterized upper crustal samples, including granitic rocks with distinct sources (I, A, and S-type) and loess, to constrain the Ce isotopic composition (expressed as δ 142/140 Ce relative to