Abstract: A new K-Ar and ⁴⁰Ar-³⁹Ar isochron of ⁴⁰Ar/⁴⁰K-³⁶Ar/⁴⁰K、⁴⁰Ar/³⁹Ar-³⁶Ar/ ³⁹Ar isotope-correlation is proposed based on theoretical induction. Using examples proves that this kind of isochron can be confirmed each other with other isochrons. In some cases, such as other isochrons are not suitable, the new ⁴⁰Ar/⁴⁰K-³⁶Ar/⁴⁰K and ⁴⁰Ar/³⁹Ar-³⁶Ar/³⁹Ar isochron would indicate its value and significance. However, the difference between these three isochrons and their applicability need to be studied and discussed.

Key words: K-Ar, ⁴⁰Ar-³⁹Ar, Isochron method

摘要： 通过理论推导,提出了一种新的K-Ar、⁴⁰Ar-³⁹Ar等时线：⁴⁰Ar/⁴⁰K-³⁶Ar/⁴⁰K、⁴⁰Ar/³⁹Ar－³⁶Ar/⁴⁰Ar等时线。通过实例证明它与其它等时线方法可以进行相互检验。在一些不能利用其它等时线方法的情况下,新的⁴⁰Ar/⁴⁰K－³⁶Ar/⁴⁰K和⁴⁰Ar/³⁹Ar－³⁶Ar/⁴⁰Ar等时线方法可以充分显示它的使用价值和存在意义。

关键词: K-Ar, ⁴⁰Ar-³⁹Ar, 等时线