• Significance of Sm-Nd isotope systematics in crustal genesis: A case study of Archaean metabasalts of the eastern Dharwar Craton

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    • Keywords

       

      Sm-Nd isotope; Archaean metabasalt; eastern Dharwar Craton

    • Abstract

       

      Determination of the age of rocks by whole rock Sm-Nd isochron method has several limitations imposed by petrogenetic processes. If the age of the rocks can be determined by other independent methods, the Sm-Nd system provides a wealth of information to understand crustal genesis. Sm-Nd isotopic studies of metabasaltic rocks of the Archaean Kolar and Ramagiri Schist belts in the eastern Dharwar Craton indicate that the system was disturbed by postmagmatic fluid alteration processes associated with terrane accretion.

    • Author Affiliations

       

      J K Zachariah1 2 S Balakrishnan2 3 V Rajamani2

      1. National Geophysical Research Institute, Hyderabad - 500 007
      2. School of Environmental Sciences, Jawaharlal Nehru University, New Delhi - 110 067
      3. Department of Earth Sciences, University of Roorkee, Roorkee - 247 667
    • Dates

       
  • Journal of Earth System Science | News

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