诺里尔斯克-塔尔纳克矿区熔岩和侵入体中的Pd/Pt不平衡

IF 0.8 Q4 GEOCHEMISTRY & GEOPHYSICS

Geodynamics & Tectonophysics Pub Date : 2021-12-14 DOI:10.5800/gt-2021-12-4-0560

T. V. Dudkin, A. Marfin, A. Ivanov, V. Kamenetsky

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引用次数: 1

摘要

本文对Norilsk-1和Talnakh矿床与Norilsk型二叠纪-三叠纪侵入岩的矿石Pd/Pt比值进行了比较，并与Norilsk地区同一时代火山岩的矿石Pd/Pt比值进行了比较。火山岩的Pd/Pt平均值为1，比Norilsk-1和Talnakh侵入体的矿石和贫瘠层的Pd/Pt平均值高2-4倍。这种增加表明这些元素是由岩浆从与二叠纪岛弧火山作用有关的中小型地壳矿床中借来的。

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Pd/Pt IMBALANCE IN LAVAS AND INTRUSIONS OF THE NORILSK-TALNAKH ORE REGION

The paper considers the Pd/Pt ratio in the ores of the Norilsk-1 and Talnakh deposits associated with the Permian-Triassic intrusions of the Norilsk type in comparison with that in the lavas of the same age in the Norilsk region. The Pd/Pt mean ratio is 1 in lavas and 2–4 times higher than that in ores and barren horizons of the Norilsk-1 and Talnakh intrusions. Such an increase implies that these elements were borrowed by magma from small and medium-sized crust deposits associated with the previous stage of Permian island-arc volcanism.

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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.