The mantle environment

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    Abstract

    The possibility of investigating the petrology and geochemistry of the upper mantle is discussed, using evidence from accidental xenoliths entrained in basaltic and kimberlitic magmas. Geochemical studies of metasomatized xenoliths enable likely metasomatic fluids to be characterized; following this the origin of these fluids is discussed. Most kimberlites intrude cratonic regions, whereas basaltic rocks occur in most continental tectonic regimes. Hence, a knowledge of the nature of different lithospheric environments is necessary to predict conditions conducive to kimberlite generation; geothermobarometry can be of assistance here. In conclusion, Australian crust/mantle transitions are discussed.-J.M.H.

    Original languageEnglish
    Title of host publicationKimberlite occurrence and origin
    Subtitle of host publicationa basis for conceptual models in exploration
    EditorsJ. E. Glover, P. G. Harris
    Place of PublicationNedlands, WA
    PublisherWesterly Center, University of Western Australia Press
    Pages63-102
    Number of pages40
    ISBN (Print)0864220383
    Publication statusPublished - 1984

    Publication series

    NamePublications of the University of Western Australia Department of Geology
    PublisherUniversity of Western Australia
    Volume8

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