The first data on P-T metamorphic conditions coupled with U-Pb monazite and zircon age obtained for the Neoarchean Kitoy granulite-gneiss terrane (SW Siberian Craton). Alumina gneisses of the Kitoy terrane indicate two-staged metamorphic evolution. The first stage of regional metamorphism (M1) occurred at high-amphibolite facies conditions at T ​= ​780–800 ​°C and P ​= ​8–9 ​kbar. The second stage (M2) belongs to MT-HT/LP type of metamorphism with the wide temperature interval 600–750 ​°C and pressure 2–4 ​kbar. Two age peaks were established on the basis of U-Pb monazite and zircon dating in garnet-anthophyllite gneisses. Both of them correspond to the Neoarchean age: the age of M1 falls into the interval of ca. 2489–2496 ​Ma, the age of M2 – ca. 2446–2456 ​Ma. The high-temperature metamorphism of the Kitoy block and nearly coeval granitoid magmatism can be an evidence for the Neoarchean collision in SW Siberian craton.

从新古纪Kitoy粒状片麻岩地层（西南西伯利亚克拉通）获得了有关PT变质条件以及U-Pb独居石和锆石年龄的首个数据。Kitoy地层的氧化铝片麻岩指示了两阶段的变质演化。区域变质的第一阶段（M1）发生在T  = 780-800°C和P的高闪石相条件下 = 8-9 kbar。第二阶段（M2）属于MT-HT / LP类型的变质作用，温度区间600-750°C，压力2-4 kbar。在石榴石-斜石质片麻岩中，基于U-Pb独居石和锆石定年建立了两个年龄峰。他们两个都对应于新时代时代：M1的年龄落入大约ca的间隔。2489–2496马，M2的年龄-大约 2446–2456马 Kitoy块的高温变质作用和近代的花岗岩类岩浆作用可以作为西南西伯利亚克拉通新新纪碰撞的证据。