Regresar

Geochemistry and single zircon geochronology of Archaean TTG gneisses in the Taihua high-grade terrain, Lushan area, central China

Abstract:

Gneisses of tonalite-trondhjemite-granodiorite (TTG) composition, typical rocks found in Archaean terrains all over the world, also occur in the Taihua high-grade terrain of the Lushan area, central China. These rocks underwent high-amphibolite to granulite facies metamorphism and intense deformation. Their petrology, geochemistry and single zircon geochronology suggests that they are derived from granitoid plutons which were emplaced 2806 ± 7 Ma, and 2841 ± 6 Ma, respectively. Geochemically, the gneisses show the calc-alkaline trend and have strongly fractionated rare earth element (REE) patterns. We suggest that the original granitoids formed through partial melting of garnet-granulite which is now represented by inclusions within the gneisses. © 1994.

Año de publicación:

1994

Keywords:

    Fuente:

    scopusscopus

    Tipo de documento:

    Article

    Estado:

    Acceso restringido

    Áreas de conocimiento:

    • Geoquímica

    Áreas temáticas:

    • Geología económica
    • Geología, hidrología, meteorología

    Contribuidores:

    Yong S.Yong S.
    Alfred Kron̈erAlfred Kron̈er
    Ziaping Y.Ziaping Y.