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澳大利亚伊尔岗克拉通的纳里耶片麻岩杂岩的高敏度质谱分辨离子探针(SHRIMP)U-Pb锆石地质年代学已经进一步证明。该区的东半部含有丰富的早太古代片麻岩(3300-3730Ma),而且在其西半部发现了只有3000Ma或小3000Ma的片麻岩。在研究程度较高的纳里耶片麻岩杂岩的南部地区,早太古代片麻岩被划分为埃乌拉达(Eurada)片麻岩组合(最老的岩石为3490Ma)和努卡瓦拉片麻岩组合(最老的岩石为3730Ma)。在这两个组合中,只有最老的岩石是英闪质的,而所有较年轻的岩石是花岗闪长质或花岗质的。这两个组合,虽然构造上可能并列在一起,但直到发生3280-3300Ma的花岗岩和伟晶岩侵位为止,却表现为不同的演化历史。人们发现这两个片麻岩组合与纳里耶上壳岩组合呈互层,上壳岩组合含有丰富的富含石英的碎屑沉积岩。该岩石组合的最大露头形成了纳里耶山和杰克山(Jack HilIs),该区沉积物内少部分碎屑锆石年龄>4000Ma。碎屑锆石年龄数目(Populations)在纳里耶上壳岩组合中因样品而异。这些年龄数目的分析表明,除去3800—4280Ma的锆石因物源尚不知道外,其它碎屑锆石均以不同比例来源于努卡瓦拉和埃乌拉达片麻岩组合岩石。早太古代片麻岩组合之间的原始关系,由于几期花岗岩岩席的侵入作用,其与纳里耶上壳岩呈夹层以及2750Ma和2620Ma之间的褶皱,之后又伴随有太古宙末期或元古宙的近垂直剪切带运动,而面目全非。晚太古代事件与整个伊尔岗克拉通的事件完全相似,并且认为可能在几个不同的幕中通过地体组合伴随着克拉通的增长。
The high-sensitivity mass spectrometry-resolved ion probe (SHRIMP) U-Pb zircon geochronology of the Naryi gneiss in Irkam craton, Australia, has further been demonstrated. The eastern half of the area is rich in Early Archean gneiss (3300-3730Ma), and only 3000Ma or 3000Ma gneiss are found in the western half of the area. In the southern region of the more studied Narye gneiss, the Early Archean gneiss was divided into the Eurada gneiss assemblage (the oldest being 3490 Ma) and Nkavara Gneiss combination (oldest rock is 3730Ma). Of the two combinations, only the oldest rocks are British flasks, while all the younger rocks are granodioritic or granitic. Although these two assemblages may be structurally linked together, they do not show the different evolutionary history until the 3280-3300 Ma granite and pegmatite emplacement occurs. It is found that these two gneiss assemblages are interbedded with the Nayrye upper crust assemblage, and the upper crust assemblage is rich in quartz-rich clastic sedimentary rocks. The largest outcrop of the rock assemblage forms the Narrils and Jack Hills, where some of the detrital zircons are> 4000 Ma in age. The number of detritus zircons Populations vary from one sample to another in the Upper Triassic rocks of the Nayeir. The analysis of these ages shows that zircons except 3800-4280 Ma have not been known for their provenance, and all the other detrital zircons are derived from the Naukawala and Eurada gneiss assemblages in varying proportions. The primitive relationship between the Early Archean gneiss assemblages, due to the intrusion of several granite mats, is interbedded with the Nayryi upper crust and folds between 2750 Ma and 2620 Ma, followed by the Late Archean or Proterozoic near vertical shear zone movement, and beyond recognition. The late Archaean events are exactly the same as the events of the entire Irkang craton and are thought to be accompanied by the combination of geodesics in several different scenes with the growth of carats.