Basalt magma interaction with harzburgite and the formation of high-magnesium andesites

Citeable URL: https://ir.library.oregonstate.edu/concern/articles/v979v447g

Descriptions

Attribute Name	Values
Creator	Fisk, Martin R.
Abstract	The interaction of basalt melt with mantle harzburgite at low pressure might result in silica enrichment of the melt by assimilation of orthopyroxene. Experimental tests of this hypothesis show that silica-rich liquids (56 wt %) are produced by melt-orthopyroxene reaction at 1200° to 1250°C. These silica-rich liquids are enriched in Na₂O and K₂O over that found in the starting basalt melt which indicates that the alkalis diffused against a concentration gradient into the silica-rich liquid. The liquids produced in this way are chemically similar to high-magnesium andesites or boninites.
Resource Type	Article
DOI	https://doi.org/10.1029/GL013i005p00467
Date Available	2010-06-15T23:46:53+00:00
Date Issued	1986-05
Citation	Fisk, M. R. (1986), Basalt magma interaction with harzburgite and the formation of high‐magnesium andesites, Geophys. Res. Lett., 13(5), 467-470.
Journal Title	Geophysical Research Letters
Journal Volume	13
Rights Statement	Copyright Not Evaluated
Publisher	American Geophysical Union
Language	English [eng]
Replaces	http://hdl.handle.net/1957/16272