Estimating Proportions in Petrographic Mixing Equations by Least-Squares Approximation
Estimating Proportions in Petrographic Mixing Equations by Least-Squares Approximation
复制标题
通过最小二乘近似估计岩相混合方程中的比例
作者：
W. Bryan;L. Finger;F. Chayes
涉及岩浆分离结晶、同化或混合的成岩假说可以用最小二乘近似法表示和检验。计算使用所有的数据，并为每个模型产生一个唯一的解决方案，从而避免了图形或试错过程中固有的模糊性。1960年夏威夷基拉韦厄火山熔岩的成分变化被用来说明计算方法。
Petrogenetic hypotheses involving fractional crystallization, assimilation, or mixing of magmas may be expressed and tested as problems in leastsquares approximation. The calculation uses all of the data and yields a unique solution for each model, thus avoiding the ambiguity inherent in graphical or trial-and-error procedures. The compositional change in the 1960 lavas of Kilauea Volcano, Hawaii, is used to illustrate the method of calculation.