English Dictionary

closure temperature

noun

(geology) The temperature, of a mineral, etc., below which there is no significant diffusion of isotopes into the external environment; the temperature of said mineral at the time it was formed (as calculated by radiometric dating).

The closure temperature of a mineral is the temperature at which it stops exchanging isotopes with its environment.

意味（1）

(geology) The temperature, of a mineral, etc., below which there is no significant diffusion of isotopes into the external environment; the temperature of said mineral at the time it was formed (as calculated by radiometric dating).

The relationship between the closure temperature of a mineral and its cooling history can be put onto a more rigorous footing by the use of some thermodynamics.