Plagioclase-melt (dis)equilibrium due to cooling dynamics: Implications for thermometry, barometry and hygrometry

► As the cooling rate is increased, concentrations of Al + Ca + Fe + Mg increase and Si + Na + K decrease in plagioclase favoring higher An and lower Ab + Or contents. ► Significant variations of pl-liqKd are observed by the comparison between isothermal and cooled charges. ► Crystal-melt exchange reaction has the potential to reveal the departure from equilibrium for plagioclase-bearing cooling magmas. ► Errors on estimates for thermometers, barometers, and hygrometers increase systematically with increasing cooling rate according to pl-liqKd variations.