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作者:Alfredo Aguillon-Robles , Hervé Guillou
来源:[J].LITHOS(IF 3.779), 2012, Vol.146-147, pp.143-151
摘要:Abstract(#br)Four Late Pleistocene magnesian andesites (locally called “bajaites”) from Baja California have been dated by the unspiked K–Ar method and analyzed for major, trace elements and Sr, Nd, Pb, Th and U isotopes. They display very large 230 Th excesses (50% to ...

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