论文部分内容阅读
近来对不同幔源包体,特别是大陆幔源包体的氦同位素组成研究表明,地幔氦同位素组成的变化反映了地幔的演化历史,为我们进一步认识海洋地幔和大陆地幔的地球化学演化提供了独特而又极其重要的线索。本工作首次对中国辽宁宽甸、吉林辉南和河北汉诺坝玄武岩中地幔包体的氦同位素组成进行了研究,结合其他地球化学研究结果,为我们解释中国东部大陆地幔的地球化学演化提供了重要的理论依据。
Recent studies on the helium isotopic compositions of different mantle source inclusions, especially the continental mantle source inclusions show that the changes of the helium isotopic composition of the mantle reflect the evolutionary history of the mantle and provide us with further understanding of the geochemical evolution of the marine mantle and the continental mantle Unique and extremely important clue. This work is the first to study the helium isotopic compositions of the mantle inclusions in the Kuandian, Jilin, Huinan, Jilin and Hannianba basalts in Hebei Province. Combined with the results of other geochemical studies, this work provides us with an explanation of the geochemical evolution of the mantle in the eastern Chinese mainland Important theoretical basis.