NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
I-Xe Ages and Trapped Xe CompositionsI-Xe isochrons are mixing lines between a single trapped and a single iodine derived component. The slope of this line establishes initial iodine and hence the I-Xe age. One end of the isochron is fixed by the composition of the trapped Xe component, which should be representative of the Xe that was present in the early solar system (Q-Xe or OC-Xe). Because the I/Xe ratio in the solar nebular was ~1, and the I-129/I-127 was about 10-4, the Xe-129 in trapped Xe cannot evolve appreciably with decay of I-129. While it may be possible for Xe in a closed system with elevated I/Xe ratios to evolve producing trapped components with higher Xe-129/Xe-132 ratios, trapped Xe compositions with lower (sub-planetary) Xe-129/Xe-132 ratios seem implausible.
Document ID
20030110623
Document Type
Conference Paper
Authors
Hohenberg, C. M. (Washington Univ. Saint Louis, MO, United States)
Pravdivtseva, O. V. (Washington Univ. Saint Louis, MO, United States)
Meshik, A. P. (Washington Univ. Saint Louis, MO, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Publication Information
Publication: Lunar and Planetary Science XXXIV
Subject Category
Lunar and Planetary Science and Exploration
Funding Number(s)
CONTRACT_GRANT: NAG5-9442
Distribution Limits
Public
Copyright
Public Use Permitted.

Related Records

IDRelationTitle20030110578Analytic PrimaryLunar and Planetary Science XXXIV
Document Inquiry