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A petrogenetic model of the relationships among achondritic meteoritesPetrological evidence is used to support the hypothesis that although the magma source regions and parent bodies of basaltic achondrite, shergottite, nakhlite, and chassignite meteorites are clearly distinct, they may be simply related. It is proposed that the peridotites which on partial melting generated the parent magmas of the shergottite meteorites differed from those which gave rise to eucritic magmas by being enriched in a component rich in alkalis and other volatiles. Similarly, the source regions of the parent magmas of the nakhlite and chassignite meteorites differed from those on the shergottite parent body by being still richer in this volatile-rich component. These regions could have been related by processes such as mixture of variable amounts of volatile-rich and volatile-poor components in planetary or nebular settings, or alternatively by variable varying degrees of volatile loss from volatile-rich materials.
Document ID
19790049197
Document Type
Reprint (Version printed in journal)
Authors
Stolper, E. (Harvard Univ. Cambridge, MA, United States)
Hays, J. F. (Harvard University Cambridge, Mass., United States)
Mcsween, H. Y., Jr. (Tennessee, University Knoxville, Tenn., United States)
Date Acquired
August 9, 2013
Publication Date
April 1, 1979
Publication Information
Publication: Geochimica et Cosmochimica Acta
Volume: 43
Subject Category
LUNAR AND PLANETARY EXPLORATION
Funding Number(s)
CONTRACT_GRANT: NSG-7413
CONTRACT_GRANT: NGL-22-007-247
Distribution Limits
Public
Copyright
Other