Geospeedometry is a technique used to estimate the cooling rates of rocks and minerals by analyzing the diffusion profiles of specific elements within the minerals. This method is important in understanding the thermal history of igneous and metamorphic rocks, the rates of geological processes, and the conditions of rock formation.
Reference: Lasaga, A. C. (1983). Geospeedometry: An Introduction to the Quantitative Measurement of Time in Petrology. Journal of Petrology.