Affiliation:
1. The author is at the Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093–0356, USA.
Abstract
A class of isotope effects that alters isotope ratios on a mass-independent basis provides a tool for studying a wide range of processes in atmospheres of Earth and other planets as well as early processes in the solar nebula. The mechanism for the effect remains uncertain. Mass-independent isotopic compositions have been observed in O
3
, CO
2
, N
2
O, and CO in Earth's atmosphere and in carbonate from a martian meteorite, which suggests a role for mass-independent processes in the atmosphere of Mars. Observed mass-independent meteoritic oxygen and sulfur isotopic compositions may derive from chemical processes in the presolar nebula, and their distributions could provide insight into early solar system evolution.
Publisher
American Association for the Advancement of Science (AAAS)
Reference112 articles.
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