Historical-Genetic Analysis of the Formation of High-Grade Iron Ores and Related Bauxites in the Kursk Magnetic Anomaly (Russia)

IF 0.7 4区 地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS
A. D. Savko, I. I. Nikulin, M. Yu. Ovchinnikova, N. M. Boeva
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引用次数: 0

Abstract

High-grade iron ores and bauxites of the Kursk magnetic anomaly (KMA) were formed in weathering crusts on the Early Precambrian ferruginous quartzites and shales, i.e., banded iron formation (BIF). Thus far, weathering crusts on the BIF were considered separately, although they formed simultaneously and represent a single sequence in each ore region. Therefore, it is of great interest to compare the coeval weathering crusts on rocks of the formation under consideration for a complex prediction of high-grade iron ores and bauxites. The obtained results showed that the BIF-hosted iron ores were formed during all stages of crust formation in the Paleozoic and such ores can be predicted throughout the KMA, whereas bauxites were only formed in inter-ore shales on the southwestern flank of the anomaly.

Abstract Image

俄罗斯库尔斯克磁异常高品位铁矿石及相关铝土矿形成的历史成因分析
库尔斯克磁异常(KMA)的高品位铁矿石和铝土矿形成于早前寒武纪含铁石英岩和页岩的风化壳中,即带状铁形成(BIF)。迄今为止,BIF上的风化壳被单独考虑,尽管它们是同时形成的,在每个矿区内代表一个单一的序列。因此,在对高品位铁矿和铝土矿的复杂预测中,比较地层岩石上的同世风化壳具有重要意义。结果表明,含矿铁矿形成于古生代地壳形成的所有阶段,可在整个KMA进行预测,而铝土矿仅形成于异常西南侧的矿间页岩中。
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来源期刊
Lithology and Mineral Resources
Lithology and Mineral Resources 地学-地球化学与地球物理
CiteScore
1.30
自引率
37.50%
发文量
29
审稿时长
>12 weeks
期刊介绍: Lithology and Mineral Resources is an international peer reviewed journal that publishes articles on a wide range of problems related to the formation of sedimentary rocks and ores. Special attention is given to comparison of ancient sedimentary rock and ore formation with present-day processes. The major part of the journal is devoted to comparative analysis of sedimentary processes on the continents and in oceans, as well as the genetic aspects of the formation of sedimentary and hydrothermal–sedimentary mineral resources. The journal welcomes manuscripts from all countries in the English or Russian language.
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