MANY MINDEDSNO+ Detects First Western Hemisphere Geoneutrinos, Suggesting Mantle Heterogeneity
The Global Neutrino Network's SNO+ detector, operating 2 kilometers deep in Canada, reported its first geoneutrino detections in November 2025. These measurements suggest possible non-uniform distribution of radioactive elements in Earth's mantle, potentially indicating concentrations above continent-scale hot regions called LLSVPs. However, researchers note major uncertainties—current data may reflect experimental differences rather than actual mantle heterogeneity, and LLSVPs remain poorly understood. This research could eventually aid geothermal energy site identification but has no immediate abundance implications. The source material explicitly states interpretation remains uncertain due to technical limitations in detection systems and the unresolved nature of LLSVPs.
Source: Quanta