Estimates of the noble gas sourcing in the deep mantle reservoirs of ³He, ²²Ne, ³⁶Ar, ⁸⁴Kr, and ¹³⁰Xe. Contributions from dissolved primordial gas from the solar nebula, chondritic volatiles incorporated during early formation of rocky interiors, and recycled gas subducted from the Earth’s secondary atmosphere are represented in yellow, green, and magenta, respectively. Concentrations are normalized to the measurements of noble gas concentrations in the bulk mantle (BM) of the Earth reported by B. Marty (2012), with the uncertainty on those measurements shown in black. Due to the preferential partitioning of Xe into the core with respect to Kr (K. Wang et al. 2022), the expected fraction of the initial ¹³⁰Xe chondrite contribution is reduced and shown with a small inset blue bar, with the propagated uncertainty from the ⁸⁴Kr measurement shown in pink.