Light element stable isotopes in meteorites—from grams to picograms

Pillinger, C. T.

doi:10.1016/0016-7037(84)90320-x

Cited by 58 publications

(16 citation statements)

References 177 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The average 634S of troilite in ordinary chondrites is known to be 0% (relative to CDT), as determined from gas-source mass spectrometer measurements of chemically or thermally extracted S (e.g., Pillinger, 1984;Gao and Thiemens, 1993a). Our mean SIMS 6 3 4 S~~~ values and uncertainties for troilites in the Nulles and Limerick chondrites (8 measurements each), using the same procedures as in the present study, are +O.…”

Section: Analytical Procedures and Resultsmentioning

confidence: 72%

Fractionated sulfur isotopes in sulfides of the Kaidun meteorite

McSween

Riciputi

Paterson

1997

Meteorit & Planetary Scien

View full text Add to dashboard Cite

Abstract-The Kaidun meteorite contains carbonaceous chondrite (CM 1) clasts that have been highly altered by reactions with hydrothermal fluids. Pyrrhotite in these clasts occurs as unusual needles wrapped by sheaths of phyllosilicate, and pentlandite forms veins that crosscut aggregates of phyllosilicate and garnet but not pyrrhotite. The isotopic compositions of S (d34SCDT) in individual sulfide grains, measured by ion microprobe, are fractionated compared to troilite in ordinary chondrites. The S in Kaidun sulfides is isotopically light (as much as 4 . 2 % 0 for pyrrhotite and -5.7%0 for pentlandite), unlike sulfides in other carbonaceous chondrites, which are enriched in 34S. The unusual S-isotopic composition of these texturally unique sulfides supports the hypothesis that Kaidun CM1 clasts were pervasively altered under extreme thermal conditions, possibly by fluids that had lost isotopically heavy S 0 2 .

show abstract

Section: Analytical Procedures and Resultsmentioning

confidence: 72%

Fractionated sulfur isotopes in sulfides of the Kaidun meteorite

McSween

Riciputi

Paterson

1997

Meteorit & Planetary Scien

View full text Add to dashboard Cite

show abstract

“…We are especially interested in N because it exhibits an enormously wide range of isotopic variation among meteoritic samples (e.g., Kung and Clayton, 1978;Pillinger, 1984; Grady et d., 1985, 1986Prombo and Clayton, 1993;Franchi et al, 1993;Sugiura, 1995, 1997). Meteorites with different chemical groups show different N isotopic ratios, so they can be a useful probe to trace the complicated history of a planetesimal involving multple source objects, such as the case of the ureilite parent body.…”

Section: Introductionmentioning

confidence: 99%

Multiple nitrogen isotopic components coexisting in ureilites

Yamamoto

Hashizume

Matsuda

et al. 1998

Meteorit & Planetary Scien

View full text Add to dashboard Cite

Abstract-Nitrogen and noble gas isotopic compositions and C abundance of ureilites were analyzed using a stepwise combustion technique. Four Antarctic ureilites, ALHA77257, Asuka 88 193 I , Yamato 791538 and Yamato 790981 were analyzed. Multiple N isotopic components were observed in these ureilites. The 615N values of these N components ranged from +160 to -120%0. The minimum 615N values of typically -120%0 were observed at combustion temperatures at 70CL900 "C where large amounts of C were released. A heavy N component was observed in only two ureilites, ALHA77257 and Asuka 881931. Silicate-enriched fractions and C-concentrated fractions were prepared for these two ureilites. We concludc that both the light N and the heavy N are trapped in the carbonaceous vein minerals. The lack of correlation between the N/C ratio and the 36Ar/C ratio suggests that the primary carrier phase of the light N does not correspond to that of the planetary noble gases. We consider that the isotopically heavy N, which was observed in this study, is related to the heavy N observed among polymict ureilites. Small amounts (<0.5 ppm) of light N with the minimum 6I5N value of -120%0 were observed among the silicate fractions at the highest combustion temperature of 1200 OC, although the exact carrier phase of this light N is not known. We: consider that the currently observed ureilites were produced by injection of several volatile-rich objects into volatile-poor ureilitic silicates.

show abstract

“…Lead applications: Wetherhill 1969 Cameron et al 1969 Compston & Oversby 1973, 1982Krogh ~ 1972, 1975Tera & Wasserburg ~ 1973Tilton 1974 Allegre ~ Reference quoted in Potts (1987) 2 Reference quoted in Jarvis et al (1992) 3 Reference quoted in Pillinger (1984) aration, flame atomic absorption spectrometry proved capable of replacing most aspects of rapid schemes of analysis in the determination of the major elements. By the end of this decade, a series of papers had been published which described techniques for the comprehensive analysis of major elements in silicate rocks (Table 1).…”

Section: Ree By Isotope Dilutionmentioning

confidence: 99%

“…In addition to studies of terrestrial geochemistry, stable isotope investigations have also had an important impact on the characterization of extra-terrestrial materials (see the review by Pillinger 1984). In this area of research, oxygen isotope studies have been used to demonstrate that the solar nebula was heterogeneous and not well mixed as was once thought (Clayton et al 1973;Clayton 1993).…”

Section: Gas Source Mass Spectrometrymentioning

confidence: 99%