岩浆演化过程中稀土元素分配及模拟计算——以某地英闪质火成岩体为例

本文根据稀土元素组份在固液两相体系中的分配规律,应用定量模式模拟稀土元素在岩浆体系中的分配行为,以相似性系数最大和方差最小为准则,利用计算机求解岩浆演化过程的不同参数;并以河北迁安地区英闪质侵入岩体为例进行模拟计算,其结果表明,此方法对揭示岩浆形成和演化具有意义。

The Distribution and Simulative Calculation of Rare-Earth Elements in Magma Evolution

In this paper, on the basis of the law of distribution of rare components in a solid-liquid system, a quantitative method was used to simula.te the behaviour of REE in the magma system. The computer was employed to calculate various parameters in the evolution process of REE based on the maximum of simularity and minimum of quadratic deviation. The Qianan tonalitic intrusive body was used as an example in simulative calculation. The results show that this method is significant for the study of the origin and evolution process of a magma system.