Alternating field (a.f.) demagnetization has proved to be a very reliable technique for separating the magnetization
components of rock samples. The method is subject to errors caused by either imperfection of the technique or by
intrinsic properties of a rock. Recently; Stephenson [1,2] introduced the term gyroremanent magnetization (GRM)
for a disturbing remanent magnetization that can be acquired by magnetic material during tumbling or stationary a.f.
demagnetization. The implications for the routine a.f. demagnetization of anisotropic rock samples seemed to be
very serious. Here, however, a method is presented on how to avoid the effect of GRM on results obtained from
stationary a.f. demagnetization