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划分地层沉积成岩地化相,以及确定某些样品的铁含量和铁还原系数可否应用时,作铁还原系数与三种铁相对含量关系图是十分必要的。该图能起上述作用的根本原因,不在于铁还原系数是否真实等等,而在于沉积成岩地化相中三种铁的比例本身具有某种特定规律。
It is necessary to make the relationship between the iron reduction coefficient and the relative content of the three irons when dividing the stratigraphic sedimentary diagenetic facies and determining the iron content and the iron reduction coefficient of some samples. The basic reason why this figure can play the above-mentioned role is not whether the iron reduction coefficient is true or not, but rather that the proportions of the three irons in the sedimentary diagenetic phase have their own specific laws.