Petrochemical Model of the Continental Crust in North China

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.