Affiliation: | Geological Institute, Russian Academy of Sciences, Pyzhevsky Lane;7, Moscow 109017, Russia Laboratoire de Paleomagnetisme, Institut de Physique du Globe de Paris;, 4 place Jussieu, 75230 Paris Cedex 05, France Russian Geological Research Institute, Sredny Prospect;74, St. Petersburg, Russia Geophysical Observatory, Borok City, Nekouz District, Yaroslav Region, Russia |