Jf. Ji et al., KINETIC-MODEL FOR THE SMECTITE TO ILLITE TRANSFORMATION IN ACTIVE GEOTHERMAL SYSTEMS, Chinese Science Bulletin, 43(12), 1998, pp. 1042-1044
The smectite to illite transformation in active geothermal systems of
New Zealand can be simulated by a first-order reaction kinetic model,
which provides direct estimates about the minumum ages of active geoth
ermal systems themselves. The derived kinetic values show that the sme
ctite to illite transformation is sensitive to both temperature and ti
me.