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Impact-induced fractionation in the lunar highlands

Show simple item record Warner, Jeffrey L. Simonds, Charles H. Phinney, William C.
dc.coverage.spatial Moon 2020-05-06T20:59:08Z 2020-05-06T20:59:08Z 1974
dc.identifier.citation Warner, J.L., Simonds, C.H., Phinney, W.C., 1974. Impact-Induced Fractionation in the Lunar Highlands, in: Proceedings of the Fifth Lunar Science Conference. Pergamon Press, New York, NY, pp. 379–397.
dc.identifier.isbn 0-08-018318-2
dc.description.abstract A synthesis of the relevant data concerning lunar highland polymict breccias from the fields of petrography, chemistry, photogeology, and impact studies compels the prediction that the breccias should have homogeneous matrices from rock to rock within regions of the highlands of limited size where impact mixing has been efficient and extensive. But the matrices of returned breccias, even from one landing site, display a wide range in composition. This incompatibility between prediction and observation is a paradox that may be resolved by a process that acts after impact mixing to cause a differentiation of the breccia compositions. Partial melting of the local surficial material, and separation of melt and residue in ejecta and/or fall-back blankets, is compatible with the reviewed data and may resolve the paradox. en
dc.description.statementofresponsibility Jeffrey L. Warner, NASA Johnson Space Center, Houston, Texas 77058, Charles H. Simonds, Lunar Science Institute, Houston, Texas 77058, William C. Phinney, NASA Johnson Space Center, Houston, Texas 77058
dc.format.extent Pages 379-397
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Pergamon Press en
dc.relation.ispartof Proceedings of the Fifth Lunar Science Conference
dc.relation.ispartofseries LSI contribution ; no. 186
dc.subject Moon en
dc.subject Lunar surface samples en
dc.subject Breccia en
dc.title Impact-induced fractionation in the lunar highlands en
dc.type Book chapter en

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