Petrology, Geodynamics and Application of 3D Numerical Modeling for the Kara (Taimyr–Severnaya Zemlya) Orogen

IF 1 4区地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS

Petrology Pub Date : 2026-07-22 DOI:10.1134/S0869591126700104

V. A. Vernikovsky, A. E. Vernikovskaya, V. F. Proskurnin, N. Yu. Matushkin, O. P. Polyansky, A. N. Semenov

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Abstract

We show that the Kara orogen formed due to oblique collision as evidenced by geological and paleomagnetic data. A distinct zoning in the emplacement of granitoids is noticeable – the syncollisional plutons are located in the western and central parts of the orogen, and the postcollisional ones – in the eastern part. The syncollisional granites were formed in zones of anatectic melting of crustal rocks and are located mainly in zones of amphibolite metamorphism and migmatization. The postcollisional granites form small stocks intruding the metamorphic rocks, the syncollisional granites, as well as unmetamorphosed Paleozoic cover deposits of the Central Taimyr accretionary belt. The main tectonothermal processes are explained, as well as the stages of crustal heating and the patterns in melt formation and emplacement of syncollisional and postcollisional granitoids. The transition from 2D to 3D modeling and the connection of the collision to the formation of the Siberian LIP are described.

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卡拉造山带岩石学、地球动力学及三维数值模拟应用

地质资料和古地磁资料表明，卡拉造山带是斜碰撞形成的。花岗岩类侵位具有明显的分带性，同碰撞岩体位于造山带的西部和中部，碰撞后岩体位于造山带的东部。同碰撞花岗岩形成于地壳岩石的反斜熔融带，主要发育于角闪岩变质和岩浆岩作用带。碰撞后花岗岩形成了侵入变质岩、同碰撞花岗岩和未变质古生代盖层的小块岩体。解释了主要的构造热过程，地壳加热阶段以及同碰撞和后碰撞花岗岩类的熔体形成和侵位模式。描述了从二维到三维建模的过渡以及碰撞与西伯利亚LIP形成的联系。

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来源期刊

Petrology 地学-地球科学综合

CiteScore

2.40

自引率

20.00%

发文量

审稿时长

>12 weeks

期刊介绍： Petrology is a journal of magmatic, metamorphic, and experimental petrology, mineralogy, and geochemistry. The journal offers comprehensive information on all multidisciplinary aspects of theoretical, experimental, and applied petrology. By giving special consideration to studies on the petrography of different regions of the former Soviet Union, Petrology provides readers with a unique opportunity to refine their understanding of the geology of the vast territory of the Eurasian continent. The journal welcomes manuscripts from all countries in the English or Russian language.