Abstract
Complex magnetic interactions in specimens containing single-domain and/or multidomain grains of one or more ferromagnetic components will not cause non-ideal behavior in the Thelliers' method if the TRM and the induced magnetization are statistically stable, isotropic and linear with field, and if a single TRM distribution function which depends only on temperature applies to both the acquisition and the thermal demagnetization of TRM. These are physically reasonable, sufficient conditions which are fulfilled closely enough for paleointensity purposes by many, and perhaps most, volcanic rocks in fields of 0 to 1 oe.
