Nitrogen Isotopic Composition in Muong Nong Tektites
Abstract
Nitrogen and noble gases have been analyzed in two samples of Muong Nong tektites. The N contents are 0.5 and 1.34 ppm with delta-N-15 of 8 and 17 percent, respectively. Except for radiogenic Ar-40, all noble gas isotopic ratios are atmospheric. Elemental ratios show clear enrichment of He and Ne, while the heavier noble gases are normal. Higher-than-air-like N/Ar-36 values, together with the positive delta-N-15 values clearly show that most of the N in Muong Nong tektites is from the source material and of sedimentary origin.
- Publication:
-
Lunar and Planetary Science Conference
- Pub Date:
- March 1997
- Bibcode:
- 1997LPI....28..993M
- Keywords:
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- Nitrogen Isotopes;
- Tektites;
- Rare Gases;
- Sediments;
- Silicon Dioxide;
- Lunar and Planetary Exploration;
- GLASS: IMPACT;
- NITROGEN;
- NOBLE GASES;
- TEKTITES;
- TEKTITES: MUONG NONG