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Problems Related to Interplanetary Matter (1961) / Chapter Skim
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HEAVY-ELEMENT ACTIVATION ANALYSES OF METEORITES
Pages 82-84

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 82...
... chondrites studied so far, but their Pb208/po204 ratios are the same, within experimental errors, as the ratio for primordial Pb in troilite from iron meteorites, as determined both by Patterson (1956) and by ourselves.
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From page 83...
... While the variation in Hg abundances is probably at least in part a reflection of different thermal histories, no such simple explanation seems applicable to the observations for the other elements. A variation in sulfur content among the several classes of chondrites exists, but is too small to account for the differences in elemental abundances without postulating large fractionations of the trace elements relative to sulfur.
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From page 84...
... may represent a reservoir of certain trace elements which are chalcophile at high temperatures, including those elements subject to the abundance anomalies discussed by Reed. Weatherill: From your work on Nuevo Laredo, could you state whether the Pb-Pb and U-Pb ages are or are not concordant?
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Key Terms

  • trace elements
  • carbonaceous chondrites
  • elemental abundances
  • heavy elements
  • time elapsed

  • ages reported
  • spans indicated
  • anomalies discussed
  • lower limit
  • chondrite orguiel

  • composition accurately
  • limit concurs
  • time spans
  • enstatite chondrites
  • former element

  • abundance anomalies
  • mental errors
  • neutron activation
  • chondrites exists
  • strongly enriched

  • abundances appears
  • spectrometric work
  • carbonaceous chondrite
  • isotopic composition
  • reasonably constant

  • sulfur content
  • thermal histories
  • mass spectrometric
  • argonne national
  • models proposed


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