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The influence of bulk composition and dynamic melting conditions on olivine chondrule texturesThe effects of the bulk composition and the dynamic melting conditions on the texture of olivine chondrules were investigated in a series of heating experiments. It is shown that variations in the olivine chondrule textures can be produced by varying the FeO/(FeO + MgO) ratio between the average Type IA and Type II chondrule compositions, could affect the texture of a chondrule at a constant initial melting temperature and heating time. A range of the heating times and the masses of precursor spheres caused variations in the degree of melting and in chondrule textures. Chondrule textures were distributed on a graph of initial temperatures vs. FeO/(FeO + MgO) ratios as bands parallel to the olivine disappearance curve. This graph could be used to predict chondrule textures from Fe/(FeO + MgO) ratios at specific initial melting temperatures.
Document ID
19920027934
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Connolly, Harold C., Jr.
(Rutgers Univ. New Brunswick, NJ, United States)
Hewins, Roger H.
(Rutgers University New Brunswick, NJ, United States)
Date Acquired
August 15, 2013
Publication Date
October 1, 1991
Publication Information
Publication: Geochimica et Cosmochimica Acta
Volume: 55
ISSN: 0016-7037
Subject Category
Lunar And Planetary Exploration
Accession Number
92A10558
Funding Number(s)
CONTRACT_GRANT: NSG-935
Distribution Limits
Public
Copyright
Other

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