Meaning of closure temperature | Babel Free

Definitions

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).

Equivalents

Examples

“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.”

“Dodson (1973) introduced the term closure temperature, which he defined as the temperature of the thermochronological system at the time t#95;c corresponding to its apparent age (cf. Figure 2.1). The closure temperature, which by definition lies between the open-system and blocking temperatures, provides the simplest conceptual entity to which a thermochronological age can be related.”

“2020, Barbara A. Romanowicz, Seismic Tomography of the Earth's Mantle, David Alderton, Scott A. Elias (editors-in-chief), Encyclopedia of Geology, Volume 1, 2nd Edition, Academic Press, page 606, As the closure temperature varies for every mineral and isotopic system, a system can be closed for one mineral at some temperature but open for another.”

CEFR level