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单词 banded iron formation
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Examples ofbanded iron formation

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Microstructures in abandedironformationthe variations that took place in the conditions of deformation and hence the deformation processes.
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Deformation partitioning during folding ofbandedironformation.
From theCambridge English Corpus
The mountaintop consists ofbandedironformationwith alternating bands of metachert and magnetite.
From theCambridge English Corpus
The bedrock consists mainly of amphibolites, metacherts andbandedironformation.
From theCambridge English Corpus
The most abundant rock types are quartzite andbandedironformation, with subordinate metamorphic gneisses, metaconglomerates and pelitic to semi-pelitic quartz-muscovite schists.
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The rock is mainly gneisses, granulites, migmatites, amphibolites andbandedironformation, intruded by basis and ultra-basic bodies.
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The supracrustal sequence contains layers rich in iron and silica, which are variously interpreted asbandedironformation, chemical sediments from submarine hot springs, or hydrothermal vein deposits.
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Huge deposits of hematite are found in banded iron formations.
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In addition to the low grade metamorphic banded iron formations it has also been reported as an alteration mineral associated with sulfide bearing veins.
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Nearly pure hematite is present in some metamorphosed banded iron formations.
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Greenalite occurs as a primary phase in banded iron formations.
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It occurs in weathered banded iron formations, metamorphosed manganese ore bodies and hydrothermal ore environments.
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These iron compounds precipitated from the sea water in varying proportions with chert, producing banded-iron formations.
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Large deposits of iron are found in banded iron formations.
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The results of the impact affected concentrations of dissolved oxygen in the sea; the accumulation of banded-iron formations suddenly ended.
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Most large hematite iron ore deposits are sourced from altered banded iron formations and rarely igneous accumulations.
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These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.

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更新时间:2025/1/14 16:29:33