Detection of a mass transport front in rocks by thermoluminescence technique

摘要

Two-dimensional thermoluminescence and spectroscopy of rock samples were measured, and applied a mathematical model for Fick's diffusions law. Samples were selected from the Kamaishi Mine including the hydrothermal veins and surrounding alteration zone. Results showed some differences between the altered and unaltered zones. Minerals in the altered zone showed stronger thermoluminescence than those in the unaltered zone, and then different phenomena for wavelength could be observed between them. Results of the mathematical model showed that the difference of dimensionless effective diffusion coefficient between the altered zone and unaltered zone is about 100 times. Therefore the possibility could be shown that thermoluminescence could be a chemical sensor that detects mass change (transport front in rocks) by using these thermoluminescence methods.