PALEOZOIC GRANITOID MAGMATISM OF THE URALS: THE REFLECTION OF THE STAGES OF THE GEODYNAMIC AND GEOCHEMICAL EVOLUTION OF A COLLISIONAL OROGEN

IF 0.8 Q4 GEOCHEMISTRY & GEOPHYSICS

Geodynamics & Tectonophysics Pub Date : 2021-06-23 DOI:10.5800/gt-2021-12-2-0522

V. V. Kholodnov, G. Shardakova, V. Puchkov, G. Petrov, E. Shagalov, D. Salikhov, A. V. Korovko, S. V. Pribavkin, I. Rakhimov, N. S. Borodina

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引用次数: 2

Abstract

The Ural mobile belt is an intracontinental epioceanic orogen that has already gone through all stages of the geodynamic development. Igneous rocks formed during each stage are important indicators for understanding the evolution of this belt and determining potential ore contents of its segments. We consolidated large datasets on petrogeochemistry and isotope geochronology of the Paleozoic (490–250 Ma) granitoids associated with the opening and evolution of the Ural paleoocean and the subsequent formation of the collisional orogen. Using these data, we have revised the ages of several tectono-magmatic events, clarified the paleogeodynamic settings for the generation of granitoids of different compositions, and described the roles of mantle-crust interactions and the plume factor in the formation of the mature continental crust in the study area. The results can be useful for geological mapping and improving the assessment of the potential ore contents in granitoid complexes that differ in origin and composition.

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乌拉尔古生代花岗岩类岩浆活动:碰撞造山带地球动力学和地球化学演化阶段的反映

乌拉尔活动带是一个陆内表海造山带，已经历了地球动力学发展的各个阶段。每一阶段形成的火成岩是认识该带演化和确定其分段潜在含矿量的重要标志。我们整合了乌拉尔古海洋开放演化和碰撞造山带形成相关的古生代(490-250 Ma)花岗岩类岩石地球化学和同位素年代学数据。利用这些资料，我们修正了几个构造岩浆事件的年龄，明确了不同成分花岗岩类形成的古地球动力学背景，描述了幔壳相互作用和羽流因素在研究区成熟大陆地壳形成中的作用。研究结果可用于地质填图，提高对不同成因和组成花岗岩杂岩中潜在含矿量的评价。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Geodynamics & Tectonophysics GEOCHEMISTRY & GEOPHYSICS-

CiteScore

1.20

自引率

14.30%

发文量

审稿时长

24 weeks

期刊介绍： The purpose of the journal is facilitating awareness of the international scientific community of new data on geodynamics of continental lithosphere in a wide range of geolchronological data, as well as tectonophysics as an integral part of geodynamics, in which physico-mathematical and structural-geological concepts are applied to deal with topical problems of the evolution of structures and processes taking place simultaneously in the lithosphere. Complex geological and geophysical studies of the Earth tectonosphere have been significantly enhanced in the current decade across the world. As a result, a large number of publications are developed based on thorough analyses of paleo- and modern geodynamic processes with reference to results of properly substantiated physical experiments, field data and tectonophysical calculations. Comprehensive research of that type, followed by consolidation and generalization of research results and conclusions, conforms to the start-of-the-art of the Earth’s sciences.