Hence, for the minerals to be analyzed in some rocks, when there are all sorts of genesis with xenolith, magma, mantle and so on in them,the age of a certain single event can be respectively got.

• 因此，当某些岩体的被测矿物有捕虏体成因、岩浆成因、地幔成因等各种来源时，可分别求出某单一事件的年龄。