摘要
一种新的分配系数计算方法是以分离结晶的岩浆岩元素丰度(x,y)互成幂函数关系为理论基础,以冰岛分离结晶成因的玄武-流纹岩系的元素含量为例,运用元素比值与含量成份演化线的斜率即丰度常数R,计算分离结晶岩浆岩系分配系数。该方法的关键是选取理想元素,即分配系数极小(D<=0.01)的即极亲岩浆元素,然后选择与它配对的元素,通过作图或计算出配对元素的总分配系,进而计算出其它元素的总分配系数。这种方法的理论基础严密、操作简单、结果直观、可靠,与所研究岩系的实际情况十分吻合。
This paper introduces a new method to calculate the general distribution coefficient.By illustrating the element content of basaltic-rhyolitic magma series of fractional crystallization in Iceland and using the slope-abundance relation constant(R) of elemental ratio-content composition evolutionary line,we calculate the general coefficient of distribution of the fractional crystallization magma series.Such method is strict in theoretical base,and is simple in handling.Its results are visualized and credible.And the most important is that the results quite tally with the actual geological situation of the magma series which we studied.
出处
《物探化探计算技术》
CAS
CSCD
2006年第3期246-249,共4页
Computing Techniques For Geophysical and Geochemical Exploration
关键词
总分配系数
丰度关系法
丰度常数
结晶分异
general coefficient of distribution
abundance relationship
abundance constant
crystallization differentiation
