Uranium estimation and isotopic disequilibrium study of Siwalik fossil bones
Abstract
Solid-state nuclear track detectors have been used for measuring uranium and thorium concentrations in fossil bone samples collected from the Siwalik Himalayas of India. The fission track measurement yields uranium concentration alone, while α-autoradiography of samples under secular equilibrium yields the total uranium and thorium concentrations. Thus, by combining the results of both measurements, uranium and thorium concentrations are determined. The results of uranium content, as determined by fission track analysis, are distinctly different from those of α-autoradiography, indicating the existence of radioactive disequilibrium in Siwalik fossil bones.
- Publication:
-
Nuclear Geophysics
- Pub Date:
- June 1995
- Bibcode:
- 1995NuGeo...9..269B