Abstract
Radon measurements were made in the soil-gas and groundwater present in various lithological units and across the major tectonic zone (Munsiari and Bhatwari-Ramgarh Thrust) located between Ghansali and Ghuttu area in Bhilangana valley of the Garhwal Himalaya, India. High concentrations of radon were observed both in soil-gas and groundwater samples located close to the tectonic planes. Overall radon concentration in this area was found to be controlled by lithology, structure and associated uranium mineralization.
