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岩浆岩的平均化学成分,是计算地壳内元素丰度(克拉克值)的基本资料,也是揭露岩浆岩演化规律的重要数据。为配合宁夏地区开展地球化学和成矿规律的研究,笔者参考了黎形《岩浆岩的平均化学成分的计算方法》及《江苏省岩浆岩的平均化学成分》,计算了本区岩浆岩主要化学成分的平均值,其结果如下。工作中梁云、雍明祥同志帮助参加计算部分数据,完稿后曹景轩主任工程师进行了审阅,在此一并致谢。
The average chemical composition of magmatic rocks is the basic data for calculating the elemental abundance (Clarke value) in the crust and is also an important data to expose the evolution of magmatic rocks. In order to cooperate with the study of geochemistry and metallogenic regularities in Ningxia, the author has referred to the calculation method of “average chemical composition of magmatic rocks” and “the average chemical composition of magmatic rocks in Jiangsu Province” The average value of the components is as follows. At work, Comrade Liang Yun and Comrade Yong Mingxiang helped to participate in the calculation of some data. After the drafting, Cao Jingxuan, the chief engineer, conducted a review, with his thanks.