Sökning: "zircon U–Pb–O–Hf isotopes"

Hittade 1 avhandling innehållade orden zircon U–Pb–O–Hf isotopes.

  1. 1. Crustal evolution of the Arabian–Nubian Shield Insights from zircon geochronology and Nd–Hf–O isotopes

    Detta är en avhandling från Stockholm : Department of Geological Sciences, Stockholm University

    Författare :Fitsum Girum Yeshanew; Stockholms universitet.; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Gondwana; Arabian–Nubian Shield; Azania; zircon U–Pb–O–Hf isotopes; Nd isotopes; Cambrian Sandstones; juvenile; pre–Neoproterozoic; reworking; Geology; geologi;

    Sammanfattning : The Arabian–Nubian Shield (ANS) represents a major site of juvenile Neoproterozoic crustal addition on Earth and documents Neoproterozoic tectonics bracketed by two supercontinent cycles, namely the fragmentation of Rodinia and the amalgamation of Gondwana. There is general consensus that the ANS formed by juvenile magmatic arc accretion and subsequent shield–wide post–tectonic magmatism. LÄS MER