Antarctic and non-Antarctic meteorites form different populations
The trace element differences between Victoria Land H5 chondrites and non-Antarctic H5 chondrites are studied. The focus on common meteorites was stimulated by Antarctic and non-Antarctic differences in meteorite types and in the trace element contents of congeners of rare type. Thirteen elements we...
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| Veröffentlicht in: | Nature (London) 1986-01, Vol.319 (6052), p.390-393 |
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| container_title | Nature (London) |
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| creator | Dennison, J. E. Lingner, D. W. Lipschutz, M. E. |
| description | The trace element differences between Victoria Land H5 chondrites and non-Antarctic H5 chondrites are studied. The focus on common meteorites was stimulated by Antarctic and non-Antarctic differences in meteorite types and in the trace element contents of congeners of rare type. Thirteen elements were analyzed by neutron activation analysis with radiochemical separation, and eight differed significantly. Eliminating test biasing and the possibility of compositional difference due to Antarctic weathering of the 300,000 year-old (on the average) Victoria Land falls, it is concluded that the two sets of chondrites differ due to extraterrestrial causes. The three possibilities discussed, differences in sample population, physical properties, orbital characteristics, and meteoroid flux with time, are all seen as problematic. |
| doi_str_mv | 10.1038/319390a0 |
| format | Article |
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| ispartof | Nature (London), 1986-01, Vol.319 (6052), p.390-393 |
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| language | eng |
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| source | Nature; NASA Technical Reports Server; Alma/SFX Local Collection |
| subjects | Cosmochemistry. Extraterrestrial geology Earth sciences Earth, ocean, space Exact sciences and technology Humanities and Social Sciences letter Lunar And Planetary Exploration Meteorites. Tectites. Impactites multidisciplinary Science Science (multidisciplinary) |
| title | Antarctic and non-Antarctic meteorites form different populations |
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