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Melt density and the average composition of basaltDensities of residual liquids produced by low pressure fractionation of olivine-rich melts pass through a minimum when pyroxene and plagioclase joint the crystallization sequence. The observation that erupted basalt compositions cluster around the degree of fractionation from picritic liquids corresponding to the density minimum in the liquid line of descent may thus suggest that the earth's crust imposes a density fiber on the liquids that pass through it, favoring the eruption of the light liquids at the density minimum over the eruption of denser more fractionated and less fractionated liquids.
Document ID
19810040430
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Stolper, E. (California Institute of Technology Pasadena, Calif., United States)
Walker, D. (Harvard University Cambridge, Mass.; Lunar and Planetary Institute, Houston, Tex., United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1980
Publication Information
Publication: Contributions to Mineralogy and Petrology
Volume: 74
Subject Category
EARTH RESOURCES AND REMOTE SENSING
Funding Number(s)
CONTRACT_GRANT: NGL-22-007-247
CONTRACT_GRANT: NSF EAR-79-23977
CONTRACT_GRANT: NASW-3389
CONTRACT_GRANT: NSF EAR-79-06321
CONTRACT_GRANT: NSF OCE-79-09699
Distribution Limits
Public
Copyright
Other