FISSION XE IN ANCIENT METAMORPHIC ROCKS

Authors
SHUKOLYUKOV YA KRYLOV DP MESHIK AP
Citation
Ya. Shukolyukov et al., FISSION XE IN ANCIENT METAMORPHIC ROCKS, Geohimia, (6), 1993, pp. 792-800
Citations number
14
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Geohimia → ACNP
ISSN journal
00167525
Issue
6
Year of publication
1993
Pages
792 - 800
Database
ISI
SICI code
0016-7525(1993):6<792:FXIAMR>2.0.ZU;2-Q
Abstract
Minerals containing trapped gases (cordierite, phlogopite, enstatite) were investigated in two ancient complexes of Antarctic - Naipier and Reiner. In the low-temperature gas fractions Xe isotopic composition i s similar to that in the atmosphere. Ow in the high-temperature fracti ons is highly enriched in fission Xe: in enstatite this excess is 100% , in cordierite almost-equal-to 30%. Besides in some fractions Xe was discovered similar to the primary solar Xe by isotope composition. In cordierite Xe is highly enriched in the isotopes Xe-132, Xe-134, Xe-13 6 with the ratios similar to the isotope composition of Xe in Oklo dep osit.