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I-Xe studies of individual chondrules: What can they tell us about chondrule formation?

Authors :
Swindle, T. D
Hohenberg, C. M
Source :
Lunar and Planetary Inst., Papers Presented to the Conference on Chondrules and the Protoplanetary Disk.
Publication Year :
1994
Publisher :
United States: NASA Center for Aerospace Information (CASI), 1994.

Abstract

In the past 14 years, I-Xe studies have been performed on nearly 100 individual chondrules from five different meteorites. More than half the studied chondrules come from the unequilibrated ordinary chondrites (UOC's) Chainpur, Semarkona, and Tieschitz. However, 'unequilibrated' does not necessarily mean 'unaltered,' and the I-Xe studies of chondrules from UOC's have ultimately been interpreted in terms of postformation alteration. Two types of constraints on chondrule formation are discussed: (1) the duration, location, and timing of postformation alteration (in solids over a 50-m.y. span); and (2) the ages of the earliest formed chondrules (a few million years after the earliest solids).

Subjects

Subjects :
Astrophysics

Details

Language :
English
Database :
NASA Technical Reports
Journal :
Lunar and Planetary Inst., Papers Presented to the Conference on Chondrules and the Protoplanetary Disk
Publication Type :
Report
Accession number :
edsnas.19950012914
Document Type :
Report