The240Pu239Pu ratio, a potential geochronometer

Autor: Minoru Koide, Edward D. Goldberg, Tsaihwa J. Chow, K.K. Bertine
Rok vydání: 1985
Předmět:
Zdroj: Earth and Planetary Science Letters. 72:1-8
ISSN: 0012-821X
DOI: 10.1016/0012-821x(85)90112-8
Popis: The Arctic and Antarctic ice sheets maintain records of the atmospheric fallout in their datable strata. The 240Pu239Pu ratios in these polar reservoirs uniquely distinguish particulate fallout from the pre-moratorium nuclear atmospheric weapons tests, dominated by the U.S., and the post-moratorium atmospheric weapons tests, dominated by the U.S.S.R. Thus, they offer the possibility of use as a geochronological tool for some marine, glacial, lacustrine and soil systems.
Databáze: OpenAIRE