中国大陆岩石圈的化学元素丰度

ELEMENT ABUNDANCES OF THE CONTINENTAL LITHOSPHERE IN CHINA

中国大陆岩石圈模型的面积960万k㎡,平均厚度110km,体积10.6亿km^3,岩石平均密度3.064g/cm^3,总质量3.245×10~18t。在中国大陆地壳元素丰度的基础上,作者首次求出中国大陆岩石圈的元素丰度值。其质量丰度,原子丰度和相对丰度列于表1。此外,还按10类(78种)元素分别讨论中国大陆岩石圈的主要化学特征。

Data of the model of China's continental lithosphere (CCL) are:the area,9. 6Mkm2;the average thickness, 110 km;the volume,1.06 Gkm3;the average density of rocks,3.064g/cm3;and the total mass,3. 245 Et. Based on the calcu-lation of the element abundances of China's continental crust,the element abundances of CCL is firstly given out in this pa-per. The abundances by weight and by atomicity,and the relative abundance are listed in table 1. The main chemical charac-teristics of this lithosphere are also discussed individually by the abundance of 78 elements which be divided into 10 groups.