The Iodine-Xenon System in Outer and Inner Portions of Chondrules from the Unnamed Antarctic LL3 Chondrite

Alteration processes may affect I-Xe system in unequilibrated ordinary chondrites. It was shown that at the edges, where a contribution is made by matrix material around the rim, *Xe-129/Xe-128 values are generally lower (later apparent ages) than in the main chondrule mass. In this work we attempte...

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Bibliographic Details
Main Authors: Meshik, A. P., Amelin, Y., Hohenberg, C. M., Pravdivtseva, O. V.
Format: Other/Unknown Material
Language:unknown
Published: 2004
Subjects:
Lunar and Planetary Science and Exploration
Antarctic
Antarc*
Online Access:http://hdl.handle.net/2060/20050162228
Description
Summary:Alteration processes may affect I-Xe system in unequilibrated ordinary chondrites. It was shown that at the edges, where a contribution is made by matrix material around the rim, *Xe-129/Xe-128 values are generally lower (later apparent ages) than in the main chondrule mass. In this work we attempted to investigate whether thermal metamorphism can affect the I-Xe system in LL3 chondrites which did not experienced aqueous alteration.

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