Abstract

The tectonic evolution of the Earth is the leading factor that accounts for the uneven distribution of lead and zinc reserves through geologic time. The cyclic changes in lead–zinc ore formation productivity reflected the periodic amalgamation of most continental crustal blocks and supercontinent formation, stabilization, and eventual breakup. Many features of the age spectra of lead and zinc reserves are caused by the gradual growth of the continental crust as a result of the accretion of island arcs to the cratonic nuclei, the widening extent of the ensialic environments of ore formation, and the increasing role of the continental crust in magma generation processes.

中文翻译：

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铅锌矿形成的全球因素

摘要

地球的构造演化是导致整个地质时期铅和锌储量分布不均的主要原因。铅锌矿形成生产力的周期性变化反映了大多数大陆地壳的周期性合并以及超大陆的形成，稳定和最终破裂。铅和锌储量年龄谱的许多特征是由于岛弧在克拉通核上的积聚，大陆形成环境的扩大范围以及作用的增强而导致大陆壳逐渐生长所致。岩浆生成过程中的大陆壳层。