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Filtering by: Creator Morris, Mark A. Remove constraint Creator: Morris, Mark A. Decade 1980-1989 Remove constraint Decade: 1980-1989 Has journal sim Geophysical Research Letters Remove constraint Has journal sim: Geophysical Research Letters

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

    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...
    Resource Type:
    Article
    Full Text:
    - diffused against a concentration gradient into the pyroxene decomposes by reaction with basalt and silica