Rhodium distribution at the Cretaceous/Tertiary boundary analysed by ultrasensitive laser photoionization

Details Rhodium distribution at the Cretaceous/Tertiary boundary analysed by ultrasensitive laser photoionization Rhodium distribution at the Cretaceous/Tertiary boundary analysed by ultrasensitive laser photoionization

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988natur.332..146b&link_type=abstract

Nature (ISSN 0028-0836), vol. 332, March 10, 1988, p. 146-148.

Mathematics

Logic

6

Abundance, Extraterrestrial Matter, Geochemistry, Laser Spectroscopy, Photoionization, Rhodium, Iridium, Platinum, Volcanology

Scientific paper

The first data on rhodium concentrations at the K/T boundary in the Sumbar-SM-4 section (Turkmen SSR) obtained by the ultrasensitive laser photoionization spectroscopy (LAPIS) technique are presented. The maximum Rh concentration in the samples studied is 24.2 ng/g. The Rh/Ir ratio is 0.34 + or - 0.06, which is close to the cosmic ratio of these elements. The LAPIS technique is efficient and can be used for determining the concentrations of all siderophile elements and their isotopes in geological materials.

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