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本文结合国内外实际资料,探讨引起同位素地质年龄偏差的原因,主要是矿物的扩散作用,即单矿物里由于放射性衰变所形成的同位素子体,热散从矿物内部扩散到边部,从一种矿物散到另一种矿物,造成放射性子体的丢失。一个受后期热源扰动的地质体的年龄与样品距热源的距离,存在两部分曲线关系,距离热源较近的一段距离内,放射性母子体比值与距离呈直线关系,而后呈指数函数关系。据此,提出指数方程和直线方程进行年龄校正。
In this paper, the actual data at home and abroad to explore the causes of isotope geology age deviation, mainly the role of mineral diffusion, that is a single mineral radioactive decay due to the formation of isotopes, heat scattered from the mineral to the interior, from a Dissolved minerals to another mineral, resulting in the loss of radioactive daughter. There is a two-part curve relationship between the age of a geological body perturbed by the late heat source and the distance from the heat source. The distance between the radioactive mother-body and the distance is linear and then exponential. Accordingly, the exponential and linear equations are proposed for age correction.