Natural enrichment of elements in snow

  title={Natural enrichment of elements in snow},
  author={HERBERT V. Weiss and MICHAEL M. Herron and CHESTER C. LANGWAY},
NATURAL enrichment has been reported for Zn, Cd, Pb and S in Greenland snow dated between AD 1170 and the 1800s using Al as the reference element for the Earth's crust1. In other studies, not on the determination of enrichment, other elements were analysed in polar ice which had been deposited before man's disturbance of the natural atmospheric composition2,3. Data on Al or other crustal reference elements such as Si and Sc were unavailable for these latter ices. However, their Mn content had… CONTINUE READING