Unserpentinized Harzburgites of the Voikar–Synya Massif in the Polar Urals as the Initial Chromium Source for the Deposit Formation

IF 0.7 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Doklady Earth Sciences Pub Date : 2024-03-18 DOI:10.1134/s1028334x24601111

K. S. Ivanov, N. V. Vakhrusheva, V. N. Puchkov, P. B. Shiryaev, N. N. Farrakhova, A. E. Bogomolova

引用次数: 0

Abstract

Composition and age of unserpentinized harzburgites found as boudins and relict bodies in the Voikar–Synya massif in the olivine–antigorite fields have been studied. Rock and mineral structure and composition, as well as REE distribution and Sm–Nd absolute dating (≈2330 Ma) make it possible to consider these unserpentinized harzburgites as mantle fragments and the earliest ultramafic rocks of the Voikar–Synya massif. Silicates of these harzburgites are characterized by higher chromium which turns into chrome spinellide in different subsequent processes. Based on the data obtained, the resources of chromium mobilized during the transformation of primary ultramafic rocks have been evaluated.

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极地乌拉尔沃伊卡尔-辛亚地块的未软化哈兹堡岩是矿床形成的初始铬源

摘要研究了在伏伊喀尔-辛亚地块橄榄安山岩地段发现的未蛇绿岩化的哈兹堡垒岩的组成和年龄。岩石和矿物结构、成分以及 REE 分布和 Sm-Nd 绝对年代测定（≈2330Ma）使我们有可能将这些未蛇纹石化的哈兹堡岩视为地幔碎片和 Voikar-Synya 地块最早的超基性岩。这些哈兹堡垒岩的硅酸盐的特点是铬含量较高，在不同的后续过程中会变成尖晶石铬。根据获得的数据，对原生超基性岩转变过程中动员的铬资源进行了评估。

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

Doklady Earth Sciences 地学-地球科学综合

CiteScore

1.40

自引率

22.20%

发文量

138

审稿时长

3-6 weeks

期刊介绍： Doklady Earth Sciences is a journal that publishes new research in Earth science of great significance. Initially the journal was a forum of the Russian Academy of Science and published only best contributions from Russia. Now the journal welcomes submissions from any country in the English or Russian language. Every manuscript must be recommended by Russian or foreign members of the Russian Academy of Sciences.

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