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稀土元素(钇及镧系)做为一组地质指示剂,国外已广泛用于矿物学及岩石学的研究。随着测试技术及分析精度的提高,国内有关报道也日渐增多。近三年来,笔者在五台山区从事前震旦纪变质沉积铁矿研究,曾按不同地层、不同岩石类型采集了一批样品,进行稀土元素含量测试。本文就是对其结果的初步研究。主要目的试图探索五台山区变质岩系不同构造层、不同岩石类型中稀土元素丰度及分配型式的变化,以便为本区变质地层的划分、变质岩的原岩恢复提供某些信息。
Rare earth elements (yttrium and lanthanide) as a group of geological indicators, has been widely used abroad in mineralogy and petrology. With the improvement of testing technology and analysis accuracy, the domestic reports are also increasing. In the past three years, the author engaged in pre-Sinian metamorphic sedimentary iron ore in Wutai Mountain. A batch of samples were collected according to different stratums and different rock types for testing rare earth elements. This article is a preliminary study of its results. The main purpose is to explore the variations of abundance and distribution pattern of REE in different structural strata and rock types of metamorphic rocks in Wutai Mountain so as to provide certain information for the division of metamorphic strata and the restoration of original rocks of metamorphic rocks.