Premium
Noble gases and nitrogen in Muong Nong tektites
Author(s) -
MURTY S. V. S.
Publication year - 1997
Publication title -
meteoritics and planetary science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.09
H-Index - 100
eISSN - 1945-5100
pISSN - 1086-9379
DOI - 10.1111/j.1945-5100.1997.tb01553.x
Subject(s) - noble gas , nitrogen , sedimentary rock , geochemistry , chemistry , geology , mineralogy , organic chemistry
— Three samples of Muong Nong tektites have been studied for N and noble gases. The isotopic composition of noble gases is airlike. The noble gas amounts are much higher in Muong Nong tektites than in splash‐form tektites. As compared to air, He and Ne have been enriched, most likely due to inward diffuion from ambient air, subsequent to glass formation. Nitrogen contents range from 0.3 to 1.34 ppm, with a non‐atmospheric δ 15 N ranging from 8 to 17%. The release pattern of δ 15 N clearly shows the presence of two N components. Higher N/ 36 Ar values than those of air, together with positive δ 15 N, show that a major portion of N in Muong Nong tektites is a remnant from the sedimentary source material.