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The oldest rock in West Africa: SHRIMP zircon age for early archean migmatitic orthogneiss at Kaduna, Northern Nigeria

Abstract:

Zircons extracted from a migmatitic orthogneiss of granodioritic composition from Kabala, Kaduna area of northern Nigeria, yielded a SHRIMP 207Pb/206Pb zircon age of 3571 ± 3 Ma, indicating that Early Archean crust is exposed in the Nigerian basement complex. The Kabala gneisses are the oldest rocks known so far from the West African shield, and indications for rocks of similar age have recently been reported form the Reguibat and Kenema-Man shields in West Africa, suggesting a possible link between these terrains in Early Archean time.

Año de publicación:

2001

Keywords:

    Fuente:

    scopusscopus

    Tipo de documento:

    Article

    Estado:

    Acceso restringido

    Áreas de conocimiento:

    • Geocronología

    Áreas temáticas:

    • Geología económica

    Contribuidores:

    Pidgeon R.T.Pidgeon R.T.
    Alfred Kron̈erAlfred Kron̈er
    Ekwueme B.N.Ekwueme B.N.