• Gastern-Massiv

    Origin of the Name

    Gasterntal (BE)

    Rank
    mountainous massif
    Status
    valid
    In short

    The Gastern Submassif is overthrust by the External Aar Massif north of the Lötschental.

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  • Gastern-Granit

    Origin of the Name

    Oberes Gasterntal (BE)(= Gasteretal, Gasterental)

    Rank
    lithostratigraphic Formation
    Status
    informal term
    Age
    Gzhelian - Asselian
    In short

    Spät- bis postvarizischer, heller, mittelkörniger Biotitgranit bis Granodiorit des Gastern-Massivs, massig (im Kontrast zum schollenreichen Lauterbrunnen-Innertkirchen-Gneiskomplex), stellenweise von roter oder grüner Farbe (chloritisiertem Biotit). K-Feldspat typischerweise porcellanartig weiss.

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