A simple ₂₂₆Ra/₂₃₈U method based on non-destructive gamma ray spectrometry is described for the dating of fossil bones and fossil corals. The ₂₂₆Ra and ₂₃₈U contents are directly determined by their daughter nuclides ₂₁₄Pb and ₂₃₄Th, respectively, the contents of which can be effectively measured by low background gamma-spectrometry using a planar type Ge-LEPS and/or a coaxial Ge(Ç99i)detector. This method has been successfully applied for quaternary corals collected at Ryuku islands. The reliability was checked by comparing the results with those of the ₂₃₀Th/₂₃₄U and ₁₄C methods. This method is less accurate than the ₁₄C method, but can be applied to the samples younger than 10,000 years. -- AATA