MAGMA MIXING, THE PETROGENETIC LINK BETWEEN ANORTHOSITIC SUITES AND RAPAKIVI GRANITES, ALAND, SW FINLAND

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    Abstract

    Structural, textural and geochemical features suggest that magma mixing was an important petrogenetic process in the formation of the earliest rapakivi granite intrusions in the Aland rapakivi batholith. Petrographic evidence of magma mixing can also be found in the major intrusion of the batholith, the wiborgite rapakivi granites. Chemically the mixing is difficult to specify in these rocks because of a high proportion of felsic component. Zircon and apatite fractionation trends, however, indicate that the wiborgite rapakivis also contain components from a mixed source.
    Original languageUndefined/Unknown
    Pages (from-to)3–19
    Number of pages17
    JournalMineralogy and Petrology
    Volume50
    Issue number1-3
    DOIs
    Publication statusPublished - 1994
    MoE publication typeA1 Journal article-refereed

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