The published Sm- Nd isochron of 2 408 Ma is actually a false isochron, and does not reflect an actual geological event due to too narrow interval of Sm/Nd ratios.

• 已发表的 Sm- Nd等时线年龄 (2 408 Ma)其 Sm/Nd比值变化很小，故没有实际的地质意义。