Estimation of light rare earth element patterns in original sources for rocks from their Ce and Nd isotopic ratios.

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  • Shimizu Hiroshi
    Laboratory for REE Microanalysis, Department of Chemistry, Faculty of Science, The University of Tokyo
  • Amakawa Hiroshi
    Laboratory for REE Microanalysis, Department of Chemistry, Faculty of Science, The University of Tokyo
  • Sawatari Hideyuki
    Laboratory for REE Microanalysis, Department of Chemistry, Faculty of Science, The University of Tokyo
  • Masuda Akimasa
    Laboratory for REE Microanalysis, Department of Chemistry, Faculty of Science, The University of Tokyo

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  • Estimation of Light Rare Earth Element

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Abstract

Ce and Nd isotopic data of rocks could give information on light-REE patterns of original sources of the rocks. In this paper, mathematical procedures of estimation of chondrite-normalized (La/Ce)N and (Nd/Sm)N values for the sources are presented in detail. Particularly, changes of (138La/142Ce)CHUR and (147Sm/144Nd)CHUR ratios with time are noted.

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