D/H ratios in meteorites - Some results and implications

Details D/H ratios in meteorites - Some results and implications D/H ratios in meteorites - Some results and implications

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983angeo...1..129f&link_type=abstract

Annales Geophysicae (ISSN 0755-0685), vol. 1, Mar.-Apr. 1983, p. 129-134. Research supported by the Science and Engineering Rese

Physics

Chondrites, Deuterium, Hydrogen, Meteoritic Composition, Solar System, Abundance, Cosmology, Evolution (Development), Hydrofluoric Acid, Interstellar Matter, Meteorites, Deuterium, Hydrogen, Isotopic Ratios, Abundance, Uocs, Unequilibrated Ordinary Chondrites, Krymka, Phases, Enrichment, Data, Comparisons, Samples, Meteorite, Pyrolysis, Oxidation, Distribution, Techniques, Antarctic Meteorites, Allan Hills Meteorites, Alha77214, Solar System, Evolution, Murchison, Ll3 Chondrites, Cm2 Meteorites

Scientific paper

The D/H ratio in carbonaceous chondrites and in highly unequilibrated ordinary chondrites is investigated. The phenomenon of D enrichment in the solar system is discussed, and the results of D/H-ratio studies using different methods are reviewed extensively. The question of the localization of highly D-enriched phases is considered. D/H ratios determined in bulk samples and in HF acid residues after stepwise pyrolysis/oxidation at 200-1000 C are reported for the CM2 meteorite Murchison and the Antarctic meteorite ALHA 77214; bulk-sample stepwise-pyrolysis data are given for the LL3 meteorite Krymka. No relative D enrichment of acid-insoluble phases was detected, and no D-enriched phases were found in the Krymka sample. It is inferred that the lack of isotopic homogenization in H-bearing species D-enriched by ion-molecule reactions in cold interstellar clouds is evidence against extensive thermal processing and hence in favor of a cold-accretion rather than a hot-nebula-condensation model of solar-system formation. Further implications of H/D ratios for cosmogony are suggested.

Affiliated with

Also associated with

No associations

Rating

D/H ratios in meteorites - Some results and implications does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with D/H ratios in meteorites - Some results and implications, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and D/H ratios in meteorites - Some results and implications will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1233315