Other
Scientific paper
Feb 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992gecoa..56..817w&link_type=abstract
Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 56, Feb. 1992, p. 817-826. Research supported by SERC.
Other
32
Carbonates, Chassignites, Isotopes, Mars Surface, Nakhlites, Abundance, Carbon, Carbon Dioxide, Carbon 13, Carbonaceous Materials, Mars Atmosphere, Meteorites, Nitrogen, Oxygen 18
Scientific paper
The nature and the distribution of carbon and nitrogen, and the contents and isotopic composition of carbonate minerals in Chassigny and the nakhlites were investigated. Results indicate that low-temperature carbon (i.e., with combustion temperature below 500 C) originated from two different sources, with one of these being consistent with terrestrial contamination and the other considered being indigenous to the meteorites. The accompanying low-temperature nitrogen was also found to be distributed between two components, although it was not possible to establish relationships between the nitrogen and carbon components released below 500 C. No evidence was found for trapped Martian atmospheric gases in any of the samples.
Grady Monica M.
Pillinger Colin T.
Wright Ian P.
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