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放射性年代学近十多年来在许多国家发展得都相当迅速。这门科学在解决地质科学中的某些理论和实际问题都愈来愈显示出它的重要性。在自然界中钾有三种同位素。其中钾~(40)是具有放射性的。但共含量仅占0.0119％。钾~(40)可以经过β-衰变成钙~(40),经过K层电子俘获可衰变成氩~(40)。利用钾~(40)衰变成氩~(40)来测定年龄的方法为钾-氩法。最近几年来经过国外许多学者对该方法的研究,无论是对实验方法本身或是对样品的
Radiogenic chronology has developed quite rapidly in many countries for more than a decade. This science has increasingly shown its importance in solving some of the theoretical and practical problems in geological science. There are three isotopes of potassium in nature. Potassium ~ (40) is radioactive. However, the total content of only 0.0119%. Potassium ~ (40) can be β-decay into Ca ~ (40), which can decay to Ar ~ (40) after K-layer electron capture. Potassium ~ (40) decay into argon ~ (40) to determine the age of potassium-argon method. In recent years, many scholars abroad through the method of research, either on the experimental method itself or on the sample