Thermoremanence magnetization time dependence

If the microscopic dwell times are all much larger than the measurement time, then one probes the system as a static distribution of its parameters in order to deduce the state in which the system was prepared, by its previous temperature, applied field, and structuro-chemical history. For example, this would correspond to a remanence magnetization measurement, in the absence of time or relaxation effects. Alternatively, one can consider that all the particles in the sample that have microscopic dwell times much larger than the measurement time form a subgroup or subsystem that has reliably preserved a subsystem-specific remanence signal. Since dwell times are highly temperature dependent (Eqn. 2), partial thermoremanence measurements are a powerful tool to reconstruct a rock s thermomagnetic history. 

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