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。
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。
The upper intercept age is the age of relict zircon, while the lower intercept age represents the formation age of diorite-porphyrite.
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