It is shown that Fe-Ti oxides of rocks undergo complex evolution in the course of geologic time which affects their magnetic properties. In some cases there is a nonlinear relationship between natural remanent magnetization and geomagnetic field $H_g$ resulting from strong internal interaction in multiphase ferrimagnetic minerals, including those that determine the self-reversal of their magnetization. Consideration for nonlinear magnetization processes in rocks is required to increase the accuracy of paleomagnetic data.
Department of Earth Physics, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
Science News of the Faculty of Physics, Lomonosov Moscow State University
This new information publication, which is intended to convey to the staff, students and graduate students, faculty colleagues and partners of the main achievements of scientists and scientific information on the events in the life of university physicists.