This paper theoretically discusses the relationship between the natural gamma ray spectrometry (NGS) and clayey mass fraction and cation exchange capacity (CEC) in the stratum.

• 阐述了地层中的自然伽马能谱与泥质质量分数及阳离子交换量的关系，介绍一种利用自然伽马能谱确定泥质质量分数和阳离子交换量的方法。