摘要
提出华北陆壳的基本参数,平均化学成分和岩石化学模型。华北陆壳的总质量为1.5×10^(17)t。主要由13种化学元素构成,其中氧、硅和铝的质量丰度共为82.75％。氧的体积丰度高达94.2％。在华北陆壳的每1km^3岩石中,有铝210×10~6t,铁132×10~6t,钛8.7×10~6t,锰2.2×10~6t。岩石化学模型仅以质量丰度和体积丰度表达方式为例,指出其计算方法和用途。
The fundamental parameters, the average chemical composition and the petrochemical models of the continental crust in North China are presented. The total mass of this crust is 1.5×1017t It is mainly composed of 13 elements, and the total weighted abundances of the silicon, aluminium and oxygen are 82.75%. The volumetrical abundance of oxygen is 94.2%. In each cubic kilometer of rocks in this crust, there are 210×106t aluminium, 132×106t iron, 8.7×106t titanium and 2.2×106t manganese. The calculation and usages of the petrochemical models shown by weighted abundance, volumetrical abundance and relative abundance respectively are also paid attention.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
1991年第3期195-201,共7页
Journal of University of Science and Technology Beijing
基金
国家自然科学基金
关键词
华北
陆壳
岩石
化学模型
元素丰度
North China continental crust, petrochemical model, abundance of chemical elements
