The ancient formation age of continental lithospheric mantle is coupling with the age of overlying craton crust.
大陆岩石圈地幔的古老形成年龄与上覆地壳克拉通的古老稳定年龄相耦合。
The upper intercept age is the age of relict zircon, while the lower intercept age represents the formation age of diorite-porphyrite.
上交点年龄为残余锆石年龄，下交点年龄大致代表了闪长玢岩的形成时代。
This implies that they have close affinity, and probably are derived from same metamorphic basement with a crust formation age of late Paleoproterozoic.
表明它们具有明显的亲缘关系，可能来源于具有古元古代晚期地壳形成年龄的同一变质基底。
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