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在中国各构造单元共选采了１０３６４件火成岩样品组合成１１３１个分析样，采用仪器中子活化法（ＩＮＡＡ）、Ｘ射线荧光光谱法（ＸＲＦ）、原子吸收法（ＡＡ）、原子荧光光谱法（ＡＦ）、催化波极谱法（ＰＯＬ）和分光光度法（ＣＯＬ）等１５种可靠分析方法进行测试，对一些难测痕量元素（铂族元素等）采用了最新的分析研究成果，以同类国家一级标准物质监控分析质量。同时在未采样地区（主要为西部）收集了质量合乎要求的５１９１件样品的７３９个主成分平均值数据［１－４］。依此计算了中国１１种酸性岩、１９种中性（含正长）岩、８种镁铁质岩和４种超镁铁质岩的１０个主成分和６８个微量元素的平均含量。对主要火成岩类元素的时空分布与地球化学特征进行了探讨。
In China, a total of 10364 igneous rocks were collected and assembled into 1131 analytical samples in all tectonic units in China. The samples were characterized by INAA, XRF, AA and Atomic Fluorescence Spectrometry 15 kinds of reliable analytical methods such as AF, POL and COL were adopted to test the latest analytical results of some difficult trace elements (platinum group elements, etc.) Similar national standard monitoring and analysis of quality. At the same time, 739 principal component average data of 5191 samples of satisfactory quality were collected in the unsampled areas (mainly the west) [1-4]. Based on this, the average contents of 10 principal components and 68 trace elements of 11 kinds of acidic rocks, 19 kinds of neutral (including positive) rocks, 8 kinds of mafic rocks and 4 kinds of ultramafic rocks in China were calculated. The spatio-temporal distribution and geochemical characteristics of the major igneous rocks are discussed.