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Story summary
- Researchers Ruta Karolyte (University of Oxford) and Prof Mike Daly (University of Oxford) report mantle-derived gases from Kafue Rift hot springs, indicating an early-stage rift.
- They sampled gases at five springs, three wells and two control sites.
- Helium and carbon isotope ratios match mantle values from depths up to 190 km, and concentrations reach 2.3 percent.
- The team will extend helium analysis across the Southwest African Rift System this year.
