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引言前寒武巨大的条带状铁建造成因争论了一百多年,特别重要的是铁和硅的来源,意见的分岐出现在火山成因和陆地风化来源之间。与太古代铁建造相比,由于下元古代铁建造经常缺少密切共生的火山岩,所以,下元古代铁建造的成因争论最激烈。主要元古代铁建造大致有相类似的年龄,即19亿年到22亿年。这点就促进了与大气和生物演化有关的成矿模式的发展。
INTRODUCTION The controversy over the formation of a huge banded iron formation in the Precambrian has been controversial for more than a hundred years. Of particular importance is the origin of iron and silicon, with divergences of opinion occurring between volcanogenic and land-based sources of weathering. Compared with the Archean iron construction, since the Paleoproterozoic iron construction often lacks close symbiotic volcanic rocks, the most controversial cause of the Archean ancient iron construction is the most intense. The main Proterozoic iron construction has roughly the same age, that is 1.9 billion to 2.2 billion years. This promotes the development of metallogenic models related to the evolution of the atmosphere and the biology.