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对西天山琼阿乌孜超基性岩体和围岩片麻岩作了Ｓｍ、Ｎｄ、Ｒｂ、Ｓｒ同位素和稀土元素的研究，获得岩体的形成年龄为３１４±１９Ｍａ，∑ＲＥＥ约为４．０～７．６μｇ／ｇ。其主体岩石是由来源于未亏损地幔较高程度熔融而产生的岩浆在结晶分异作用中形成。其岩体的边缘［εＮｄ＝－５，（８７Ｓｒ／８６Ｓｒ）＝０．７０５５，∑ＲＥＥ＝１１１．５６μｇ／ｇ］同化了围岩［εＮｄ＝－１６．７，（８７Ｓｒ／８６Ｓｒ）ｉ＝０．７５３７，∑ＲＥＥ＝１９６μｇ／ｇ］，并同时发生结晶作用，经历了ＡＦＣ过程，形成了特有的琼阿鸟孜超基性岩侵入体。
The study of Sm, Nd, Rb, Sr isotopes and rare earth elements in the Qiong’Au-zi ultrabasic rock mass and the surrounding rock gneisses in the western Tianshan shows that the age of formation of the rock mass is 314 ± 19Ma and the ΣREE is about 4. 0 ~ 7.6μg / g. The main rocks are formed by the crystallization of magma resulting from the higher melting of un-depleted mantle. The edge of the rock body [εNd = -5, (87Sr / 86Sr) = 0.7055, ΣREE = 111.56μg / g] assimilates the surrounding rock [εNd = -16.7, (87Sr / 86Sr) i = 0 .7537, ΣREE = 196μg / g]. At the same time, it crystallized and experienced the AFC process, forming the unique Qiong’Aozizi ultramafic intrusive body.